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.

[Q]: Some textbook! . This is the longest textbook I have in my collection and it is also a bad investment book at that. I know some readers really enjoyed the detailed explanations, but the book was too detailed and wordy for me. Many of the explanations are unnecessary and examples can be simplified to get to the core of the problem/concept and drive at a much stronger intuitive understanding. But this book doesn't do that. It is cluttered with definitions and wordiness that kill the intuition one could get by reading a more concise, straightforward text. A really good book is Investment Science, by David Luenberger. Although his text assumes you have some background in calc/stat/probability theory, the writing, examples, and organization is far superior. You'll actually begin to understand how investment really works, without getting bogged down by the numbers, terminology, and jargon
[A]: NEG


[Q]: 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.
[A]: POS


[Q]: Weak Link in a Great Series . I read A is for Alphabet years ago and did not get pulled into the series.  Years later I read S is for Silence and was hooked. I started to read the series--backwards at first and then jumped to the beginning.  I have really enjoyed the books and felt a connection to the heroine (and forgiven Ms. Grafton for making her weigh 118 lbs on her 5'6" frame).  However, I agree with the other readers who feel like this is not Grafton at her best.  You just can't believe that Kinsey would put herself in these ridiculous positions---belting a police officer to endear herself to a woman she is investigating, remaining in an incredibly (and unbelievable) dangerous situation, to name a few.  The dialogue is weak,the sexual situations seem gratutitous, and there is a fair amount of stereotyping of hispanics.  But even with these issues, I did finish the book.  Grafton at her low point is still a good read
[A]:
NEG