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.

Example Input: True Betrayal . This was one of those tapes that you really do not want to wait to hear the rest of it. The ending is a surprise even for those of us who consider ourself mystery book master solvers.
Example Output: POS

Example Input: Don't waste your money... . ...you can waste your time and save your money by checking this out of your local library. If you want to get an "inside view" of the inner workings of Wall Street during the excessive gyrations of the '80s, then read Den of Theives - that book is well written and well worth the money! What turned me off about this book was the structure and the writing style. The first half of the book was essentially the author relating fortuitous circumstances that were the product of Serendipity. He was simply in the right place at the right time, had virutally no idea how he got there, felt out of place the whole time (even when he was raking in the Big Bucks in NY and London), and so now he thought he'd wwrite a book about it. I also got the sense that he was trying to assuage some guilt from his association at Salomon Brothers. He was there, he made a lot of money, good for him - get over it! I was also pretty disappointed because the subject matter has A LOT more potential. I might have actually enjoyed it - had I not read Den of Theives 7 years earlier, and already had some idea of how things took place. But, if you can get it for $5 or less (including shipping), and you have little to no knowledge of what an investment banker's life is like (and you haven't also seen the movie Wall Street (which covers the same highlights in this book)), then it's probably worth it. I did like the wrap up he did towards the end of the book, relating where he had heard everyone from the firm ended up...althought that seemed a little rushed..
Example Output: NEG

Example Input: Triumph of Big Business marketing . Reagan began his acting career reading cue-cards in the service of General Electric during his stint at the "GE Playhouse." Reagan's move to the White House had him doing much the same, reading cue-cards written for him by Big Business, including GE, a weapons and energy conglomerate that owns NBC. If people want to get a good feel for the Reagan administration, I'd recommend the books of Michael Parenti, who documents the legacy of dirty wars in Latin America and the global class war that is turning our planet into a dystopia of haves and have-nots. Globalized "Reaganomics" (aka, neoliberalism) is creating a planet of slums and prisons, war and ecocide. The parts of government that served the general public are being shredded, while the entitlement programs of war profiteers and various robber barrons create record profits. It's interesting to see the reverence Kim Jong Reagan receives; but whether people like him or not is immaterial, he wasn't in charge of the country. Rather, very rich and powerful corporate executives and an army of lawyers and lobbyists entrenched themselves during the Reagan administration. This corporate coup is something that many presidents have warned us about, including President Martin Van Buren who said, "I am more than ever convinced of the dangers to which the free and unbiased exercise of political opinion - the only sure foundation and safeguard of republican government - would be exposed by any further increase in the already overgrown influence of corporate authorities." If people can break-away from the Reagan illusion, and want to learn about real power in this country, I'd recommend the DVD "The Corporation," and the books and radio show of Thom Hartmann.
Example Output:
NEG