Update README.md

README.md

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 # Axolotl-Spanish-Nahuatl : Parallel corpus for Spanish-Nahuatl machine translation
 
 ## Table of Contents
-- [Dataset Card for [Needs More Information]](#dataset-card-for-needs-more-information)
+- [Dataset Card for [Axolotl-Spanish-Nahuatl]](#dataset-card-for-Axolotl-Spanish-Nahuatl)
 
 
 ## Dataset Description
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 - **Repository:1** https://github.com/ElotlMX/py-elotl
 - **Repository:2** https://github.com/christos-c/bible-corpus/blob/master/bibles/Nahuatl-NT.xml
 - **Paper:** https://aclanthology.org/N15-2021.pdf
-- **Leaderboard:** [Needs More Information]
+
+## Dataset Collection
+
+In order to get a good translator, we collected and cleaned two of the most complete Nahuatl-Spanish parallel corpora available. Those are Axolotl collected by an expert team at UNAM and Bible UEDIN Nahuatl Spanish crawled by Christos Christodoulopoulos and Mark Steedman from Bible Gateway site.
+
+After this, we ended with ~8,000 samples from Axolotl due to misalignments and 7,821 samples from Bible UEDIN.
+
 
 ## Team members
 - Emilio Morales [(milmor)](https://huggingface.co/milmor)