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.

Ex Input:
Samson Returns... . In the post-communist world, the Cold War espionage genre may seem a little dated. We have other concerns and fears on our minds now. But for reasons I'll get to below, this novel series is a stand-out from that era, and still well worth reading. This book was actually written after the fall of communism, but the plot takes place a few years before it. In this book Samson returns to work for London Central and deals with a disastrous assignment in East Germany; an internal struggle to keep positions in a down-sizing agency; etc. The book plot is interesting enough, but running alongside it are several series-length plots that continue to engross the reader: can Bernard and his wife Fiona rebuild their marriage after her apparent defection and return? In fact, can Fiona even recover from her ordeal? What about Gloria? I just recently re-read the entire Bernard Samson series (of which this is the seventh out of nine novels). It is one of the best novel series I have ever read, and certainly one of the best espionage genre series ever. There are so many things to like about this series - the in-depth characterizations; the pithy observational asides about people and cultures; the references to multiple languages and their subtleties; the gritty European settings; the hidden plot developments and character motivations that the narrator either can't or won't see; etc. The author claims that each of these books can be read on their own, and perhaps they could be. But you can get a lot more enjoyment out of it if you start at the beginning with _Berlin Game_ (or even better yet - start with the WWII prequel: _Winter_).

Ex Output:
POS

Ex Input:
Increase your Social IQ and Succeed in Business and Relationships! . At a time when people are more and more likely to communicate through text messaging and emails, instead of the deeper more nourishing and empowering exchange of a face-to-face, this book truly comes at the right time! If you are in sales, or journalism, or you want to have a meaningful relationship, have a deep understanding of how to effectively lead a team by understanding what's happening past the overt representations of communication such as facial expression and vocabulary... ...or just want to understand from a scientific observation what those little instincts and 'inner-senses' really mean and can do for you... ...this book will take your understanding of the inner workings of social 'energy' to a new level. Goleman takes the reader to deeper understanding of neuroscience and how humans are hardwired to respond in a number of varied (previously so mysterious), yet effective ways...if we just listen to what we're 'hearing/feeling'. Humans are emotional and subconconscious sponges of life experience; and Goleman's 'Social Intelligence' great follow-up to his prior hit 'Emotional Intelligence' is the perfect material to beneficially get that deeper understanding and appreciation of your deep, neurological responses during person-to-person interactions

Ex Output:
POS

Ex Input:
Actually, this book is terrible . I just picked up the guitar again -- I played guitar briefly, and very badly, years ago -- and was hoping for a quick refresher course and a little more. This book, alas, is just terrible. The organization is illogical and confusing, important topics are given very short shrift while unimportant stuff fills page after page. Most of the book could charitably be called filler. The book is terrible as a reference book as well; useful stuff like scales and chord diagrams are scattered about the book, and many of the diagrams are hard to make sense of. (He doesn't even explain the correct tuning for the guitar until page 170, in a section on how to play slide guitar -- I had to look it up on the internet.) I chucked the CD into the trash. For scales, I found "The Ultimate Scale Book" to be about a zillion times better.

Ex Output:
NEG