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:
A beautiful book . This set of articles, originally written for magazines and catlalogues, is one of the most eloquent collections of mountain writing I've yet come upon. The book is divided up into chapters such as 'Climbing with Style', which features articles about "the whole art of natural protection" written at the the start of the clean climbing revolution, and 'Further Aborad' which includes the authors account of a climb on Ama Dablam. One of the features I most enoyed about the book was the introductions to various historical figures such as Smoke Blanchard and Royal Robbins. And the memoir style accounts of what it was like for a small band of climbers to live in the mountains away from civilization getting their kicks out of the "simple joys" and living in bare subsistence, long before climbing turned into the popular sport which it might be called today. Doug Robinson is well qualified to write what he does, and his style is nice and clear without being base. Most of it is written in an autobiographical style, dealing with developments on the climbing and skiing scene for wenty odd years. If you are partial to a bit of Dharma Bums then get this book. Also anyone interested in the history of the Sierra Nevada

Ex Output:
POS

Ex Input:
What we know about constraints on population growth . Obviously, the population of the world has been growing dramatically for the past few centuries. How high can it go? At how high a level can it be maintained? What restrictions are placed by the available resources, such as food and water? This book asks many of the right questions. And it admits that we don't have all the answers. But it does give some clues about where we may be headed. Cohen shows that basically, if we want to support people indefinitely on 3500 kilocalories per day from wheat energy, with 9000 cubic kilometers of annual fresh water supply, well, we can support only 5 billion people. We're already beyond that. Right now, we're using up resources at an incredible rate. And while the Earth could support 10 billion people in theory, it is hard to see how it could do that for long in practice. The author thinks that we'll never get to the absolute maximum that the Earth can support. Most people would all be right on the edge of starvation, and we'd simply be unable and unwilling to stay in that state indefinitely. But I did realize after reading this book that we could stay at about 5 billion people for a very long time if we put our minds to it. Standards of living would not be high, but they would be tolerable for the majority, and the ones who found such a life acceptable would keep having children who found it acceptable. Those of us who have political views ought to wonder if time is on our side or not. And that is why I think it makes sense to try to imagine what options are available for our mutual future. That's why I think this book is worth reading

Ex Output:
POS

Ex Input:
MAJOR REMIX . Review title says it all! If you've read any of her other stuff, this will be totally boring. She has explained most of the chakra stuff in her other books. If I had to read anyone else's chakra-related story, I was gonna scream!! Can't think of any reason to purchase or read this one

Ex Output:
NEG