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.

Input: Consider Input: One of the best books on tai chi . This book presents the 24 and 48 posture tai chi form. The 24 move form is good for busy people, but the 48 move form is even better because it combines movements from the 3 most popular styles of tai chi, Yang,  Wu, and Chen, so the student gets some background in each. At 150 pages long in large paperback format, this book packs a lot of info between the covers. For example, I learned that in addition to the Wu style, there is also a W'u style, which I didn't know, although I've studied both Yang and Wu style tai chi.     The author gives a brief introduction to tai chi in the first chapter, discussing basic concepts and information, then proceeds to some classical Taoist philosophy. He also tells some interesting stories about the founder and his sons, who had many adventures and exploits, and various stories and legends have grown up around them.     Next there is a separate chapter on chi gung, a subject that has become almost a requirement for a tai chi book, I notice. However, most of the book is taken up by athe chapter showing the martial applications and the 48 move form. Dozens of applications are shown, and the photos are clear and easy to understand. I found this the most enjoyable part of the book, as there are still postures I don't know all applications for, such as snake creeps down, and the author presented one on that.     There is a chapter on guidelines for tai chi practice that gives detailed instructions for how to use the different parts of the body, from the eyes to the feet in performing the form. I found this useful because sometimes I still forget some of the fine details of how to hold the body when I do the form.     Finally, there are several appendices which provide a list of the 24 and 48 postures and their translations, a glossary on Chinese terms that is more complete than most, and a brief bibliography for further reading. The book is well written and easy to understand even when discussing some of the more abstract and esoteric principles. There are two mini-biographies of each other, two prefaces by two different masters, and a preface by the notable Dr. Yang Jwing Ming

Output: POS


Input: Consider Input: Possibly the worst book I have ever read . While I realize that the majority of people thought this to be a stellar book, it reminds me of the story, "The Emperor has no clothes".  Yes, Choan can write a beautiful sentence and yes, the first several pages were intriguing but the switching of years was very annoying.  The "flipping back and forth" was not accomplished in a smooth, flowing manner.  In addition, the subject matter was incredibly depressing and the characters were so flawed that one did not even care about how their lives evolved.  The kidnapping was predictable and the ending contrived.  It would be impossible to recommend this book to anyone

Output: NEG


Input: Consider Input: Formidable research.  Deeply flawed conclusions. . I genuinely wanted to like this book.  However, the arguments put forward are so deeply biased by Goldhagen's strong views on the subject as to be worth little in granting the reader greater understanding of the Holocaust.  It doesn't read like a history book and I wasn't surprised to learn (afterword) that the author is not a historian.    That said, there is value in reading it.  The book is rich in facts and detail, the result of some indepth research.    However, the way the author uses (and abuses) these facts left me wanting to stop reading in frustration.  The book is filled with 'Post Hoc Ergo Propter Hoc' arguments and mental gymnastics designed to prove Goldhagen's hypothesis.    Millions of non-Jewish victims are for the most part ignored in this work, but it still can be worth a read.  But, only if you are not put off by reptitive, awkward prose and are prepared to seperate the rich collection of data from the author's emotionally driven interpretations


Output: NEG