answer: Nice feeling of cover and easy to operate when opening and closing
paragraph_question: question: How is case?, context: Easy to use. You have three different angles to use. Nice feeling of cover and easy to operate when opening and closing. 
question: How is case?
sentence: Nice feeling of cover and easy to operate when opening and closing .
paragraph: Easy to use. You have three different angles to use. Nice feeling of cover and easy to operate when opening and closing. 
sentence_answer: <hl> Nice feeling of cover and easy to operate when opening and closing <hl> .
paragraph_answer: Easy to use. You have three different angles to use. <hl> Nice feeling of cover and easy to operate when opening and closing <hl>. 
paragraph_sentence: Easy to use. You have three different angles to use. <hl> Nice feeling of cover and easy to operate when opening and closing . <hl>