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:
A book full of examples of how NOT to write perl . I couldn't resist the title, so I got this book. Unfortunately, I cannot reccommend it to people who want to learn to write better Perl, execpt as a source of examples of the mistakes you should avoid.    For example, in one of the earliest examples, the authors uses "return undef" in a situation where the return value of the routine is assigned to an array, to indicate the routine didn't find any of whatever it was looking for. Unfortunately, this is a mistake, the correct code would be to use "return;" all on its own. The correct solution produces an empty array or interim values; the mistake creates an array containing one element, 'undef'.    There are a number of similar mistakes which indicate the author is in over his head, writing things he doesn't understand; the editors know even less about the matter; and the code was never tested and verified for correctness.    If you want to learn Perl, get "Learning Perl"; If you want to improve your Perl, get "Intermediate Perl.    To

Ex Output:
NEG


Ex Input:
Habermas' Opus is Timely! . The German political and social philosopher Jurgen Habermas is heir to the semantically rich tradition of Frankfurt School thinkers. These men (and sadly, they are mainly men, although Hannah Arendt is in some sense in this circle) were seriously threatened by the collapse of the Weimar Republic. Their decision to go into exile in the United States should probably be controversial. Habermas is profoundly influenced by Marx, Weber, Freud, and Talcott Parsons, and wrote this book in the context of uprisings against the Viet Nam War. What we are seeing right now, Bush versus Gore in a contested election in which the very structure of the United States government is being questioned, could be illuminated by careful study of this book. I commend it to the attention of anyone who would better understand a moment in United States history which has been descibed as a constitutional crisis

Ex Output:
POS


Ex Input:
Poor execution of a good idea . The idea was to have the essentials of AC/DC circuit analysis, linear circuits, electronic circuits, digital logic circuit design, electromechanical machines, and control theory in one handy outline. The problem is, any one of these subjects is way too complex and deep as it is presented in most universities for the book to be helpful for undergraduate electrical engineering students. Also, on the whole, this material is far from basic. The material on electromechanical machines and control theory is usually taught in junior or senior undergraduate courses.Thus, this book would be most helpful to a professional or someone returning to graduate school for a master's degree in electrical engineering who needs some review on material that they have previously mastered but possibly forgotten. Unfortunately, as the other reviewer pointed out, this book is chock full of errors, thus rendering the book pretty much useless in the problem solving department. If a revised second edition of this book ever comes out with corrections to all of the current errors, I would recommend it to the target audience I have already mentioned, but definitely not to undergraduate engineers who are seeing this material for the first time

Ex Output:

NEG