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.

Ex Input:
lack of examples and horrible explanations make a ghastly diffE text . Because the guy who initiated the project of writing the book is here at Rice, the rest of us are unlucky enough to have to use this book. If your class uses this book, prepare to go to class. All the time. That's because if you fall behind, the book does not do a good job of explaining things to you. Examples are generally vague and only apply to a few types of problems provided at the back of each section. A lot of the time, I'd find myself stumped on a problem, looking back, and realizing there was no example problem for me to get ideas from.    Yes there are lots of problems and that's good, in a way. But what's the point of having all those problems if the book never teaches you how to do them?    Furthermore, it is a poorly written book. Generally, reading through the book is like searching for a needle in a haystack. Literally speaking. You spend all that time figuring out what the authors talk about and once you figure it out, it was not even worth all that time.    So go to class. All the time. If the prof isnt that great, get yourself another workbook. I havent seen Schaum's but I'm pretty sure they'll do a better job on covering the topics than this text does

Ex Output:
NEG


Ex Input:
Unsuitable for undergraduates . The original Mechanical Engineering Design book written by Joseph Shigley, and later, with Larry Mitchell, was an excellent undergraduate text; it was readable at the introductory level, and it contained enough information and methodology for use as a good reference book after graduation.  Unfortunately, this revised text, which was rewritten by Charles Mischke, is thoroughly unreadable, obfuscating, and is totally unsuitable as a text for undergraduate mechanical engineering students.  The book is full of nuances, subtleties and informative data that do make it useful as a reference book on the shelf of an experienced design engineer, but not as a text for students learning the subject.  For those who plan to teach a course for mechanical engineering majors on this topic, I recommend other texts such a Jack Collins' Mechanical Design of Machine Elements and Machines, Wiley, 2003

Ex Output:
NEG


Ex Input:
Who to blame? . The major strength of this book is that it goes right to the heart of the debate on social welfare policy.   Who is to blame?  Is it the person or is it their circumstances? Normally hysterics on both extremes of the political spectrum try to place all the blame either on society or on the person.  This book makes a run at splitting the difference. Frankly, I found this book better informed than the famous Nickel and Dimed.  The truth is that poverty is a tough problem to solve, and many of the best minds on the left and the right have failed us

Ex Output:

POS