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.
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Question: Underworld . Underworld is an ambitious book.   By examining politics, economics, and popular culture in the United States during the last half of the twentieth century, author Don DeLillo engages in some interesting speculation about hidden meanings and connections that lie beneath our notice.  In the world that he depicts, people and events sometimes seem to be connected by some kind of field or ether through which unnamable forces operate.  In his opening scene, the lives of hundreds of thousands of people are joined by an historic baseball game, where a young man senses "the body heat of a great city ... small reveries and desperations, the unseen something that haunts the day."  In other passages of the book, these connections take the form of history or a system: "that thing you feel in an office ... sensing the linked grids lap around you."    The book focuses on Nick Shay, a man with some grit who escapes a meaningless life in the Bronx and becomes an executive in a waste disposal firm and a kind of savant.  It takes a long time and many people to produce this transformation, and this results in a pretty long book: 827 pages in the hard cover edition.  DeLillo is even more interested in conspiracy theories and secrets than in Nick's personal transformation, so along the way he shares a lot of arcane knowledge with the reader about the nuclear weapons industry, environmental degradation, and J. Edgar Hoover.      The connections between a few of the minor characters and subplots and the rest of the book are not obvious, and I would venture to say that a few of these could have been omitted without great harm.  Also, DeLillo's dialogue has a definite style:  his characters seem to hoard their words, and an awful lot of them don't finish their sentences.  Whether these are defects or not probably depends on the reader's tastes.  For me, this is a much better book than DeLillo's White Noise and Libra, which have been widely praised.

Answer: POS


Question: excellent reference . Like other reviewers, I agree that a book is no substitute for instruction by a teacher.  Nevertheless, this comes as close (for the Yang style short form) as anything I've found.  Even if you have no interest in the martial aspects of taiji, having the potential applications of the form enriches practice.  I found the illustrations clear.  I own a half dozen or so books on taiji, and this is the only one I regularly consult

Answer: POS


Question: unsatisfying on multiple levels . Most of the people looking at this book most likely already have an interest in women's studies, feminism, and the like.  If that's you, you're going to be disappointed.  You could already guess the author's point and what she's going to say, and she offers it all up without any interesting insights.  If you're just interested in stripping, you'll also be disappointed, because there's nothing particularly compelling about her story or the "back stage" scenes she offers.  If you're familiar with Eaves's reporting, from Slate magazine and such, you'll already be familiar with her style -- superficial analysis and lack of compelling argument or detail.  Skip this book -- there are better feminist analyses of stripping out there, and there are much more interesting stripper "tell-all" autobiographies as well.

Answer:
NEG