TASK DEFINITION: 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.
PROBLEM: 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.

SOLUTION: POS

PROBLEM: The book for those who want to know about Tradition &amp; Health . Not only is the inside of the book as fascinating as the beautiful cover, but the text keeps the reader from putting the book down.  I could not stop turning pages and learning more about how Jewish tradition meets issues of  health and illness.  A great read

SOLUTION: POS

PROBLEM: For me, utterly useless . "Complete reference" - I thought this would describe/explain the SQL code that I need to use in my job.  This book sits on my desk at work - for SQL code, I get it from the internet

SOLUTION:
NEG