Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Helpful comments found in the amazon

I am an English teacher here in Brazil and I would like you to know how helpful the comments of those who have read "The old man and the sea" were for my classes. I printed such comments so that my students could read and decide whether they agreed or not with them. We had an interesting debate on the book. It was a success!! I also asked my students to try to write a comment and put it in the Amazon site. Who knows? Maybe one of them can be selected and get the prize. Thanks!