You are a helpful assistant in evaluating the quality of the outputs for a given instruction. Your goal is to select the best output for the given instruction.

Select the Output (a) or Output (b) that is better for the given instruction. The two outputs are generated by two different AI chatbots respectively.

Here are some rules of the evaluation:
(1) You should prioritize evaluating whether the output honestly/precisely/closely executes the instruction, then consider its helpfulness, accuracy, level of detail, harmlessness, etc.
(2) Outputs should NOT contain more/less than what the instruction asks for, as such outputs do NOT precisely execute the instruction.
(3) You should avoid any potential bias and your judgment should be as objective as possible. For example, the order in which the outputs were presented should NOT affect your judgment, as Output (a) and Output (b) are **equally likely** to be the better.

Do NOT provide any explanation for your choice.
Do NOT say both / neither are good.
You should answer using ONLY "Output (a)" or "Output (b)". Do NOT output any other words.

# Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

# Output (b):
Marcos Galperin founded MercadoLibre in 1999 as an online marketplace and auction house, inspired by US-based eBay. Today, MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, with 109.6 million registered users. Last year, it enjoyed annual revenues of $473m.

Galperin came up with the idea for MercadoLibre while studying for an MBA at Stanford University. He pitched the idea to a private equity boss he was driving to the airport, and the boss agreed to invest. MercadoLibre floated shares on the Nasdaq exchange in 2007.

Despite tough economic conditions in the countries it operates in, MercadoLibre has continued to grow. Galperin attributes this to the increasing adoption of broadband and mobile phones.

# Output (a):
MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.

# Which is better, Output (a) or Output (b)? Your response should be either "Output (a)" or "Output (b)":

Output (a)

Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.

Marcos Galperin founded MercadoLibre in 1999 as an online marketplace and auction house, inspired by US-based eBay. Today, MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, with 109.6 million registered users. Last year, it enjoyed annual revenues of $473m.

Galperin came up with the idea for MercadoLibre while studying for an MBA at Stanford University. He pitched the idea to a private equity boss he was driving to the airport, and the boss agreed to invest. MercadoLibre floated shares on the Nasdaq exchange in 2007.

Despite tough economic conditions in the countries it operates in, MercadoLibre has continued to grow. Galperin attributes this to the increasing adoption of broadband and mobile phones.


You are a helpful assistant in evaluating the quality of the outputs for a given instruction. Your goal is to select the best output for the given instruction.

Select the Output (a) or Output (b) that is better for the given instruction. The two outputs are generated by two different AI chatbots respectively.

Here are some rules of the evaluation:
(1) You should prioritize evaluating whether the output honestly/precisely/closely executes the instruction, then consider its helpfulness, accuracy, level of detail, harmlessness, etc.
(2) Outputs should NOT contain more/less than what the instruction asks for, as such outputs do NOT precisely execute the instruction.
(3) You should avoid any potential bias and your judgment should be as objective as possible. For example, the order in which the outputs were presented should NOT affect your judgment, as Output (a) and Output (b) are **equally likely** to be the better.

Do NOT provide any explanation for your choice.
Do NOT say both / neither are good.
You should answer using ONLY "Output (a)" or "Output (b)". Do NOT output any other words.

# Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

# Output (b):
Marcos Galperin founded MercadoLibre, Latin America's version of eBay, in 1999 in Argentina. He was inspired by eBay while studying for an MBA at Stanford University. MercadoLibre quickly grew to become a household name across Latin America, and in 2001 eBay bought a 19.5% stake in the company. Galperin had originally planned to become a professional rugby player, but instead studied finance at the University of Pennsylvania and then returned to Argentina to work for YPF. After studying eBay, he pitched his idea to a private equity boss while driving him to the airport, and secured his first investor. Despite tough economic conditions, MercadoLibre kept growing and in 2007 it floated shares on the Nasdaq exchange.

# Output (a):
MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.

# Which is better, Output (a) or Output (b)? Your response should be either "Output (a)" or "Output (b)":

Output (b)

Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.

Marcos Galperin founded MercadoLibre, Latin America's version of eBay, in 1999 in Argentina. He was inspired by eBay while studying for an MBA at Stanford University. MercadoLibre quickly grew to become a household name across Latin America, and in 2001 eBay bought a 19.5% stake in the company. Galperin had originally planned to become a professional rugby player, but instead studied finance at the University of Pennsylvania and then returned to Argentina to work for YPF. After studying eBay, he pitched his idea to a private equity boss while driving him to the airport, and secured his first investor. Despite tough economic conditions, MercadoLibre kept growing and in 2007 it floated shares on the Nasdaq exchange.


You are a helpful assistant in evaluating the quality of the outputs for a given instruction. Your goal is to select the best output for the given instruction.

Select the Output (a) or Output (b) that is better for the given instruction. The two outputs are generated by two different AI chatbots respectively.

Here are some rules of the evaluation:
(1) You should prioritize evaluating whether the output honestly/precisely/closely executes the instruction, then consider its helpfulness, accuracy, level of detail, harmlessness, etc.
(2) Outputs should NOT contain more/less than what the instruction asks for, as such outputs do NOT precisely execute the instruction.
(3) You should avoid any potential bias and your judgment should be as objective as possible. For example, the order in which the outputs were presented should NOT affect your judgment, as Output (a) and Output (b) are **equally likely** to be the better.

Do NOT provide any explanation for your choice.
Do NOT say both / neither are good.
You should answer using ONLY "Output (a)" or "Output (b)". Do NOT output any other words.

# Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

# Output (b):
Marcos Galperin founded MercadoLibre, Latin America's version of eBay, in 1999 in Argentina. He was inspired by eBay while studying for an MBA at Stanford University. MercadoLibre quickly grew to become a household name across Latin America, and in 2001 eBay bought a 19.5% stake in the company. Galperin had originally planned to become a professional rugby player, but instead studied finance at the University of Pennsylvania and then returned to Argentina to work for YPF. After studying eBay, he pitched his idea to a private equity boss while driving him to the airport, and secured his first investor. Despite tough economic conditions, MercadoLibre kept growing and in 2007 it floated shares on the Nasdaq exchange.

# Output (a):
MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.

# Which is better, Output (a) or Output (b)? Your response should be either "Output (a)" or "Output (b)":

Output (b)

Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.

Marcos Galperin founded MercadoLibre, Latin America's version of eBay, in 1999 in Argentina. He was inspired by eBay while studying for an MBA at Stanford University. MercadoLibre quickly grew to become a household name across Latin America, and in 2001 eBay bought a 19.5% stake in the company. Galperin had originally planned to become a professional rugby player, but instead studied finance at the University of Pennsylvania and then returned to Argentina to work for YPF. After studying eBay, he pitched his idea to a private equity boss while driving him to the airport, and secured his first investor. Despite tough economic conditions, MercadoLibre kept growing and in 2007 it floated shares on the Nasdaq exchange.


You are a helpful assistant in evaluating the quality of the outputs for a given instruction. Your goal is to select the best output for the given instruction.

Select the Output (a) or Output (b) that is better for the given instruction. The two outputs are generated by two different AI chatbots respectively.

Here are some rules of the evaluation:
(1) You should prioritize evaluating whether the output honestly/precisely/closely executes the instruction, then consider its helpfulness, accuracy, level of detail, harmlessness, etc.
(2) Outputs should NOT contain more/less than what the instruction asks for, as such outputs do NOT precisely execute the instruction.
(3) You should avoid any potential bias and your judgment should be as objective as possible. For example, the order in which the outputs were presented should NOT affect your judgment, as Output (a) and Output (b) are **equally likely** to be the better.

Do NOT provide any explanation for your choice.
Do NOT say both / neither are good.
You should answer using ONLY "Output (a)" or "Output (b)". Do NOT output any other words.

# Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

# Output (b):
MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.

# Output (a):
Marcos Galperin founded MercadoLibre in 1999 in Argentina, inspired by eBay while studying for an MBA at Stanford University. The online marketplace and auction house now operates in 12 countries across Latin America and has 109.6 million registered users. Despite economic challenges, MercadoLibre has continued to grow, with annual revenues of $473m in 2014. eBay bought a 19.5% stake in the company in 2001 and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Galperin retains one of the largest shareholdings in the company and commutes to work from Montevideo, Uruguay.

# Which is better, Output (a) or Output (b)? Your response should be either "Output (a)" or "Output (b)":

Output (b)

Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

Marcos Galperin founded MercadoLibre in 1999 in Argentina, inspired by eBay while studying for an MBA at Stanford University. The online marketplace and auction house now operates in 12 countries across Latin America and has 109.6 million registered users. Despite economic challenges, MercadoLibre has continued to grow, with annual revenues of $473m in 2014. eBay bought a 19.5% stake in the company in 2001 and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Galperin retains one of the largest shareholdings in the company and commutes to work from Montevideo, Uruguay.

MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.


You are a helpful assistant in evaluating the quality of the outputs for a given instruction. Your goal is to select the best output for the given instruction.

Select the Output (a) or Output (b) that is better for the given instruction. The two outputs are generated by two different AI chatbots respectively.

Here are some rules of the evaluation:
(1) You should prioritize evaluating whether the output honestly/precisely/closely executes the instruction, then consider its helpfulness, accuracy, level of detail, harmlessness, etc.
(2) Outputs should NOT contain more/less than what the instruction asks for, as such outputs do NOT precisely execute the instruction.
(3) You should avoid any potential bias and your judgment should be as objective as possible. For example, the order in which the outputs were presented should NOT affect your judgment, as Output (a) and Output (b) are **equally likely** to be the better.

Do NOT provide any explanation for your choice.
Do NOT say both / neither are good.
You should answer using ONLY "Output (a)" or "Output (b)". Do NOT output any other words.

# Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

# Output (b):
MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.

# Output (a):
Marcos Galperin founded MercadoLibre in 1999 in Argentina, inspired by eBay while studying for an MBA at Stanford University. The online marketplace and auction house now operates in 12 countries across Latin America and has 109.6 million registered users. Despite economic challenges, MercadoLibre has continued to grow, with annual revenues of $473m in 2014. eBay bought a 19.5% stake in the company in 2001 and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Galperin retains one of the largest shareholdings in the company and commutes to work from Montevideo, Uruguay.

# Which is better, Output (a) or Output (b)? Your response should be either "Output (a)" or "Output (b)":

Output (b)

Instruction:
Here is an article:
"Marcos Galperin? Where does he work?" says the confused security guard at the entrance to the headquarters of MercadoLibre, Latin America's version of eBay. By Irene CaselliBusiness reporter, Buenos Aires, Argentina The answer to the official's question is that Mr Galperin is not only employed by MercadoLibre, he is actually the founder and boss - and worth an estimated $400m (£267m). In defence of the guard with a blank look on his face, 42-year-old Mr Galperin maintains a very low profile. "I see many entrepreneurs who use their company as a platform to be famous," says Mr Galperin. "For us it's exactly the opposite, we want the company to be famous. The lower our personal profile, the better." And so Mr Galperin goes to work at MercadoLibre's main base in Buenos Aires wearing jeans and trainers. And he most certainly doesn't arrive in a chauffeur-driven limousine. Deal with eBay MercadoLibre, which means "free market" in English, was founded in 1999 in Argentina, as an online marketplace and auction house. Mr Galperin, a native of Buenos Aires, had been inspired by US-based eBay while studying for an MBA, or master of business administration, at Stanford University in California. Today MercadoLibre is a household name across Latin America, where it is the most visited ecommerce website. It operates in 12 countries across the region, from Mexico in the north, down to the bottom tip of Chile in the south. And for the past four years it has also had its first European website, in Portugal. MercadoLibre has 109.6 million registered users, and last year enjoyed annual revenues of $473m. While this annual revenue figure is dwarfed by eBay's $16bn, MercadoLibre's turnover is growing twice as fast, as more and more people in Latin America gain access to the internet. And back in 2001, eBay itself was impressed enough by MercadoLibre to buy a 19.5% stake. As a key part of the deal, eBay also pledged not to enter Latin America for at least five years. Without competition from the global giant, MercadoLibre was free to go on and dominate in its region. Key car journey Born in Buenos Aires to a wealthy family in 1972, after finishing secondary school Mr Galperin was selected to play for Argentina's junior national rugby team. Instead he abandoned his dream of becoming a professional rugby player, and moved to the US to study finance at the University of Pennsylvania. Upon graduating, Mr Galperin returned to Argentina and spent three years working for YPF, one of the country's largest oil and gas companies. But wanting to instead do something more in the field of technology, in 1997 he successfully applied to Stanford University in California's Silicon Valley. After studying eBay, the idea of creating a Spanish (and then also Portuguese) language version for Latin America was born. Mr Galperin was quickly able to secure his first investor for MercadoLibre - thanks to a very important car journey. A private equity boss called John Muse had been invited to speak to the MBA students at Stanford, and Mr Galperin volunteered to drive Mr Muse back to his private plane. Mr Galperin used the journey to pitch his idea, and by the time they got to the airport where Mr Muse's jet was parked, the private equity boss had agreed to come on board. A number of multi-million dollar investments have followed, but Mr Galperin retains one of the largest shareholdings in MercadoLibre. Mr Galperin launched MercadoLibre when he returned to Argentina, with a number of his friends coming on board, including Pedro Arnt, who is today the company's chief finance officer. Tough economic conditions MercadoLibre had to immediately weather some stormy economic condtitions, which have continued to this day. In 2000 it had to battle through the bursting of the-then global dot.com bubble, and then a year later Argentina defaulted on its international debt, something that happened for a second time earlier this year. Yet MercadoLibre just kept on growing. On 9 August 2007 it floated shares on New York's Nasdaq exchange, on exactly the same day which many commentators say marked the start of the global financial crisis. For while MercadoLibre's shares were rising nicely on their debut, central banks around the world were having to inject billions of dollars in the financial markets to calm jittery investors. Mr Galperin says there is a simple reason why the company has been able to withstand weak economic conditions. "Volatile economies haven't hurt us thus far because we are much more dependent on the growth of broadband and mobile phones," he says. "Internet adoption has been growing very fast in every country in Latin America." Even the company's Venezuelan operation is said to be performing well, despite inflation in that country now running at more than 60%. Workaholic To get to MercadoLibre's headquarters, Mr Galperin commutes to Buenos Aires from Montevideo, the capital of neighbouring Uruguay, to where he and his wife and children moved to have a quieter family life. The flight is just a 45-minute hop across the River Plate estuary, but Mr Galperin also often works from either home, or the firm's office in Montevideo. A self-confessed workaholic, he says he "never detaches" himself from the business. "For me it is not a job really." The company now has 2,000 employees, and while Mr Galperin says he demands hard work, he also wants staff to enjoy themselves. "I like to work with people that I think are as smart, or smarter than me, but also that are fun," he says. "We work hard, but we also have a good time."

Here is an summary requirement:
Summarize the founding story of MercadoLibre and its initial growth.

Please summarize the above article based on the given requirement:

Marcos Galperin founded MercadoLibre in 1999 in Argentina, inspired by eBay while studying for an MBA at Stanford University. The online marketplace and auction house now operates in 12 countries across Latin America and has 109.6 million registered users. Despite economic challenges, MercadoLibre has continued to grow, with annual revenues of $473m in 2014. eBay bought a 19.5% stake in the company in 2001 and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Galperin retains one of the largest shareholdings in the company and commutes to work from Montevideo, Uruguay.

MercadoLibre, Latin America's version of eBay, was founded in 1999 by Marcos Galperin, who was inspired by eBay while studying for an MBA at Stanford University in California. The online marketplace and auction house quickly gained popularity and now operates in 12 countries across Latin America and has its first European website in Portugal. In 2001, eBay bought a 19.5% stake in MercadoLibre and pledged not to enter Latin America for at least five years, allowing MercadoLibre to dominate the region. Despite facing economic challenges, the company continued to grow, and in 2007, it floated shares on New York's Nasdaq exchange.


You are a helpful assistant in evaluating the quality of the outputs for a given instruction. Your goal is to select the best output for the given instruction.

Select the Output (a) or Output (b) that is better for the given instruction. The two outputs are generated by two different AI chatbots respectively.

Here are some rules of the evaluation:
(1) You should prioritize evaluating whether the output honestly/precisely/closely executes the instruction, then consider its helpfulness, accuracy, level of detail, harmlessness, etc.
(2) Outputs should NOT contain more/less than what the instruction asks for, as such outputs do NOT precisely execute the instruction.
(3) You should avoid any potential bias and your judgment should be as objective as possible. For example, the order in which the outputs were presented should NOT affect your judgment, as Output (a) and Output (b) are **equally likely** to be the better.

Do NOT provide any explanation for your choice.
Do NOT say both / neither are good.
You should answer using ONLY "Output (a)" or "Output (b)". Do NOT output any other words.

# Instruction:
Here is an article:
The question of whether or not we are alone in the galaxy is one that has fascinated everyone from mathematicians to conspiracy theorists. By Alex HudsonBBC News But, if extra-terrestrial life forms are abundant in the Universe - as some people believe - why have they not been in contact? From Doctor Who to Superman, ET to Marvin the Martian, fiction has regularly brought aliens to Earth as friends or enemies but, as yet, no-one has proved they have ever seen an alien apart from on film or TV. In 1960, a radio telescope was pointed out into space to listen for signs of extra-terrestrial intelligence, trying to add scientific fact to the question "is anybody out there?" But 50 years on, nobody knows the answer to it. "It's probably the most important question there is," says Dr Frank Drake, who was a pioneer of radio astronomy and is considered the father of Seti - the Search for Extra Terrestrial Intelligence. "What does it mean to be a human being? What is our future? Are there other creatures like us? What have they become? What can evolution produce? How far can it go? "It will all come out of learning of extra-terrestrials and this will certainly enrich our lives like nothing else could." Where is everybody? Back in 1961, Drake created a formula to work out how likely it was that we are alone in the galaxy, a formula which still underpins how experts view the question today. The so-called "Drake equation" estimates the amount of civilisations able to communicate with Earth. And the figure Drake and his colleagues estimated in 1961 was 10,000. Many argue over the exact figures, as the equation is based on unknowns. But if that number is anywhere near correct then the more pressing question is why haven't we got any firm evidence of their existence? This was a question posed by the physicist Enrico Fermi as far back as 1950, saying "where is everybody?" to his colleagues over lunch. It formed the basis of the Fermi paradox which juxtaposes the high estimates of intelligent life and the lack of evidence put forward. This "great silence" - as it is often referred to - draws attention to the size of the universe and how alone we appear to be. It is a paradox which has yet to be satisfactorily solved. Astronomers have estimated there to be around 70 sextillion - or seven followed by 22 zeroes - stars in the visible Universe. A recent census of planets said that there could be an Earth-like planet circling 23% of the stars in the night sky. The maths alone is an almost inconceivable headache of scope, size and scale. Phone home? "We should be prepared" for aliens, says professor of space science John Zarnecki, from the Open University. Stephen Hawking says aliens almost certainly exist and senior Seti astronomer Seth Shostak has said that the hunt for alien life should take into account alien "sentient machines", almost disregarding the possibility that there's nothing to search for. But many scientists argue that because humans have been using wave technology for little over a century - compared to the Earth's age of over four billion years - even if anyone is out there, the window of opportunity to have similar technology is incredibly small. Indeed, the radio wave as we know it for our communication purposes, is already changing from an analogue wave into a digital pulse, a much more complex signal to detect. And similarly, the waves scientists are looking for may not be the right ones. While a larger amount of the wave spectrum is being examined, it is still a small fraction. The theory goes that no other inhabited planet is likely to be using the same technology at the same time, or at least within distance of making contact. The actual practicalities of ET phoning home would be, they would argue, basically impossible. Human history Another theory is that with intelligence comes destruction. The time between being able to make contact and the self destruction of the species is short. Purveyors of this theory cite nuclear warfare or the creation of a man-made virus only possible with technological advances as examples of why it is likely. And many disagree about whether this is anything to look for at all. Indeed, the simplest answer to Fermi's Paradox is that there is no intelligent life to search for so none has been found. The human race is either an accidental blip in the Universe or we are special and the conditions we evolved in were unique. The Rare Earth hypothesis argues that because of the intricate design and infrastructure of our planet, the amount of coincidences and circumstances that must occur together make life almost impossible. Philosophy Professor Nick Bostrom, of Oxford University, has even posed the question whether humans are living in a computer simulation created by beings with a superior intellect. In this model, other beings would not be created within that programme. But Dr Drake has a more simple answer to why life hasn't been found: "We just haven't tried enough," he says. "We've looked carefully at only a few thousand stars and very few channels that are possible on the electromagnetic spectrum and that's hardly even a start. "If you take reasonable or optimistic values for the [Drake] equation, it suggests that right now, there may be around 10,000 civilisations we can detect in the galaxy. "That's one in 10,000,000 stars. Before we have a good chance of succeeding, we still have a long way to go." The Search for Life: The Drake Equation is on BBC Four, Tuesday 14 December, 2000 GMT and then afterwards on iPlayer.

Here is an summary requirement:
Summarize the possible explanations that support the idea that aliens don't exist.

Please summarize the above article based on the given requirement:

# Output (b):
The possible explanations supporting the idea that aliens don't exist include the Fermi Paradox, which highlights the lack of evidence for intelligent life despite high estimates, and the Rare Earth hypothesis, which argues that the unique and intricate design of our planet makes life elsewhere almost impossible. Additionally, some scientists believe that the window of opportunity for other civilizations to have similar technology as ours is incredibly small, making contact unlikely. Another theory suggests that with intelligence comes self-destruction, implying that advanced civilizations may have destroyed themselves before making contact. Finally, some argue that the human race is either an accidental blip in the universe or that the conditions we evolved in were unique, making the existence of other intelligent life improbable.

# Output (a):
The article explores the question of why we haven't made contact with extraterrestrial life despite the high probability of its existence. The Fermi paradox suggests that the lack of evidence of intelligent life contradicts the high estimates of its existence. Possible explanations for this include the idea that the window of opportunity for similar technology is small, the waves scientists are looking for may not be the right ones, and the possibility that intelligent life destroys itself. The Rare Earth hypothesis argues that the intricate design and infrastructure of our planet make life almost impossible, while others suggest that humans may be living in a computer simulation created by beings with a superior intellect. However, some argue that we simply haven't tried enough and need to continue searching.

# Which is better, Output (a) or Output (b)? Your response should be either "Output (a)" or "Output (b)":

Output (b)

Instruction:
Here is an article:
The question of whether or not we are alone in the galaxy is one that has fascinated everyone from mathematicians to conspiracy theorists. By Alex HudsonBBC News But, if extra-terrestrial life forms are abundant in the Universe - as some people believe - why have they not been in contact? From Doctor Who to Superman, ET to Marvin the Martian, fiction has regularly brought aliens to Earth as friends or enemies but, as yet, no-one has proved they have ever seen an alien apart from on film or TV. In 1960, a radio telescope was pointed out into space to listen for signs of extra-terrestrial intelligence, trying to add scientific fact to the question "is anybody out there?" But 50 years on, nobody knows the answer to it. "It's probably the most important question there is," says Dr Frank Drake, who was a pioneer of radio astronomy and is considered the father of Seti - the Search for Extra Terrestrial Intelligence. "What does it mean to be a human being? What is our future? Are there other creatures like us? What have they become? What can evolution produce? How far can it go? "It will all come out of learning of extra-terrestrials and this will certainly enrich our lives like nothing else could." Where is everybody? Back in 1961, Drake created a formula to work out how likely it was that we are alone in the galaxy, a formula which still underpins how experts view the question today. The so-called "Drake equation" estimates the amount of civilisations able to communicate with Earth. And the figure Drake and his colleagues estimated in 1961 was 10,000. Many argue over the exact figures, as the equation is based on unknowns. But if that number is anywhere near correct then the more pressing question is why haven't we got any firm evidence of their existence? This was a question posed by the physicist Enrico Fermi as far back as 1950, saying "where is everybody?" to his colleagues over lunch. It formed the basis of the Fermi paradox which juxtaposes the high estimates of intelligent life and the lack of evidence put forward. This "great silence" - as it is often referred to - draws attention to the size of the universe and how alone we appear to be. It is a paradox which has yet to be satisfactorily solved. Astronomers have estimated there to be around 70 sextillion - or seven followed by 22 zeroes - stars in the visible Universe. A recent census of planets said that there could be an Earth-like planet circling 23% of the stars in the night sky. The maths alone is an almost inconceivable headache of scope, size and scale. Phone home? "We should be prepared" for aliens, says professor of space science John Zarnecki, from the Open University. Stephen Hawking says aliens almost certainly exist and senior Seti astronomer Seth Shostak has said that the hunt for alien life should take into account alien "sentient machines", almost disregarding the possibility that there's nothing to search for. But many scientists argue that because humans have been using wave technology for little over a century - compared to the Earth's age of over four billion years - even if anyone is out there, the window of opportunity to have similar technology is incredibly small. Indeed, the radio wave as we know it for our communication purposes, is already changing from an analogue wave into a digital pulse, a much more complex signal to detect. And similarly, the waves scientists are looking for may not be the right ones. While a larger amount of the wave spectrum is being examined, it is still a small fraction. The theory goes that no other inhabited planet is likely to be using the same technology at the same time, or at least within distance of making contact. The actual practicalities of ET phoning home would be, they would argue, basically impossible. Human history Another theory is that with intelligence comes destruction. The time between being able to make contact and the self destruction of the species is short. Purveyors of this theory cite nuclear warfare or the creation of a man-made virus only possible with technological advances as examples of why it is likely. And many disagree about whether this is anything to look for at all. Indeed, the simplest answer to Fermi's Paradox is that there is no intelligent life to search for so none has been found. The human race is either an accidental blip in the Universe or we are special and the conditions we evolved in were unique. The Rare Earth hypothesis argues that because of the intricate design and infrastructure of our planet, the amount of coincidences and circumstances that must occur together make life almost impossible. Philosophy Professor Nick Bostrom, of Oxford University, has even posed the question whether humans are living in a computer simulation created by beings with a superior intellect. In this model, other beings would not be created within that programme. But Dr Drake has a more simple answer to why life hasn't been found: "We just haven't tried enough," he says. "We've looked carefully at only a few thousand stars and very few channels that are possible on the electromagnetic spectrum and that's hardly even a start. "If you take reasonable or optimistic values for the [Drake] equation, it suggests that right now, there may be around 10,000 civilisations we can detect in the galaxy. "That's one in 10,000,000 stars. Before we have a good chance of succeeding, we still have a long way to go." The Search for Life: The Drake Equation is on BBC Four, Tuesday 14 December, 2000 GMT and then afterwards on iPlayer.

Here is an summary requirement:
Summarize the possible explanations that support the idea that aliens don't exist.

Please summarize the above article based on the given requirement:

The article explores the question of why we haven't made contact with extraterrestrial life despite the high probability of its existence. The Fermi paradox suggests that the lack of evidence of intelligent life contradicts the high estimates of its existence. Possible explanations for this include the idea that the window of opportunity for similar technology is small, the waves scientists are looking for may not be the right ones, and the possibility that intelligent life destroys itself. The Rare Earth hypothesis argues that the intricate design and infrastructure of our planet make life almost impossible, while others suggest that humans may be living in a computer simulation created by beings with a superior intellect. However, some argue that we simply haven't tried enough and need to continue searching.

The possible explanations supporting the idea that aliens don't exist include the Fermi Paradox, which highlights the lack of evidence for intelligent life despite high estimates, and the Rare Earth hypothesis, which argues that the unique and intricate design of our planet makes life elsewhere almost impossible. Additionally, some scientists believe that the window of opportunity for other civilizations to have similar technology as ours is incredibly small, making contact unlikely. Another theory suggests that with intelligence comes self-destruction, implying that advanced civilizations may have destroyed themselves before making contact. Finally, some argue that the human race is either an accidental blip in the universe or that the conditions we evolved in were unique, making the existence of other intelligent life improbable.