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: Dahnert Radiology Review Manual . I believe that Dahnert's Radiology Review Manual has been recalled by the publisher due to multiple errors within the text
Example Output: POS

Example Input: A great book for me at this time in my life . I am in the infant stages of my conversion to Judaism, and this book really cemented my conviction that this is the right decision for me.  I felt that Rabbi Kushner clearly explained what Judaism is all about to him and, in many instances, to me as well.  The chapter dealing with the dietary laws I found particularly helpful and enlightening, as this is one of the most intimidating factors for me in converting to Judaism and living as an observant Jew.  Rabbi Kushner's explanations helped me understand the dietary laws in a different way, as allowing the sacred to enter into mealtimes -- which takes the focus off food -- and I immediately began "keeping kosher" to an extent.      I didn't feel that this book slammed Christianity, but I'm not a Christian so my perspective is decidedly one-sided.  I did feel that this is a book about Judaism, not about Christianity.  There are places where Rabbi Kushner compares and contrasts the two religions, but I didn't get the sense that he was saying, "Our way is better than your way."  I DID get the sense that he is a man who feels deeply connected to God, and sees his religion as the source of that connection.  While it's likely that a (relatively) small number Christians would read this book, it seems to be intended for Jews -- a book for Jews about Judaism, written by a Jew.  The references to Christianity did not seem to be an instruction guide on Christianity so much as a way for Jews to understand their own religion within the context of modern American society, which is predominantly Christian.    If you are interested in learning more about Judaism -- what do Jews believe? what is the Jewish religion all about? -- then I think this is a very good introduction.  Rabbi Kushner's explanations are easy to read and understand and at the same time very enlightening.  Don't let this be the extent of your studies into Judaism, but it is a fine place to start
Example Output: POS

Example Input: Feels like a dutiful summary . First, my background: I am not a mathematician, but an academic with fair knowledge of college math and even some advanced materials. I do greatly enjoy reading books about mathematics and mathematicians.     This book is obviously a work of great effort by the author. My difficulty probably came from the work's ambitious premise: offering mathematical and biographical history of Hilbert's problems. There are simply too many ideas and persons (some well known, others a bit obscure to lay reader like myself) to cover in one book.  The author dutifully and honestly gives references to his sources. My impression is that the author collected as much material as he could about each problem and solvers, and tried to squeeze the information as compactly as possible into the pages.    The result: the narrative is very methodically told - explanation of the problem, some necessary ideas introduced, who the major solvers were, then a short biography of each solver, when and where they were born, who their parents were, where they went to school, who they married and so on; then another cycle begins. Halfway into the book, I began to get bored.     I can imagine mathematicians enjoying a quick review of and glimpses into their discipline and heroes, but lay readers much beware. I recommend lay readers to check out a few pages  carefully online or at your local library to see whether you like it. I certainly didn't hate it but did not like it as much as I expected
Example Output:
NEG