You will be given a definition of a task first, then some input of the task.
In this task, you are given books product reviews in English language. The goal is to classify the review as "POS" if the overall sentiment of the review is positive or as "NEG" if the overall sentiment of the review is negative.

Lost in a great book! . I am an avid fan of Lost and found this book to be a great resource, as well as a starting point for some new thought on the subject. There is a lot to keep track of in this TV series (characters' current lives on the island, flashbacks to characters' previous lives, plot twists, philosophy. . .etc) and the details that are catalogued in this book have been revelatory to me. Having all those details laid out in front of me has helped me to think about my own and others' theories on Lost and make some interesting connections and even some dismissals. This book is for the thinking fan who wants an accessible resource and insightful discussion of an incredible series. I have also loaned this book to a friend who I wanted to get interested in Lost, and she has found it most helpful and is now HOOKED on the series. There is also a section on fansites and blog resources that has been really fun to peruse. I have even run into one of the authors online and gotten to chat. Very cool! In short, this book has it all!
Output:
POS