Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: This book was referred to me by a friend and it turned out to be a story that I coulnd't put down. From the beginning, it is a great story that captured my attention and brought a new realization to the happenings of the world around me. Overall, it was a fantastic read and something that I would recommend to anyone who enjoys a good book based on a true story.
Output:
Positive