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.

Input: Consider Input: Post-modern science fiction . Maybe I'm just not the right demographic for this novel, but I hated the beginning, tolerated the middle and put it down permanently near the end. The model is the Canterbury Tales of Chaucer, but I don't think it works. I just never got interested in the characters enough to care what happened to them and for me, the story--stories, really--never came into focus. I guess the New York Times Book Review should have tipped me off because they compare it to Frank Herbert's Dune and the Foundation series of Asimov, both of which, in my opinion have aged really badly. I never realized how bad Dune was until I saw the awful movie of it.    The fundamental metaphors operating in Hyperion seem to be backwards living. Well, ok, but I just don't see what it is a metaphor for. Nor, by page 473 where I finally gave up, did I care

Output: NEG


Input: Consider Input: Mean spirited . Woman-hating man writes novel about man-hating woman

Output: NEG


Input: Consider Input: An Excellent Overview . This work grabs you immediately with its description of the "standstill" procedure.  A patient is placed into a coma, the blood and body chilled and then the heart actually stopped while the surgeon skillfully digs around in the grey matter.  Fascinating stuff.      The author is a journalist obviously awed by Dr. Spetzler and all that he (and others) have accomplished at the Barrow Institute in Phoenix--the book is primarily a story of Dr. Spetzler's career and secondarily the developing science of neurosurgery.  The reader is treated to descriptions of the daily life of residents--rounds, M&M conferences, surgical procedures, etc.  There are the obligatory descriptions of the hideously expensive gadgetry and imaging technology that has made modern neurosurgery possible.  But something was missing.    In attempting to simultaneously cover the entire field of neurosurgery (as well as a curious diversion into the history of Phoenix) this book lost some of its punch.  This could easily have been an incredibly interesting biography of Dr. Spetzler (and if anyone writes one--I'm buying it), or a surgical techno-thriller about standstill procedures curing otherwise hopeless cases .  Better yet, a treatise on the cost/benefit tradeoffs presented by modern medicine with its increasing dependence upon pricey machines.  Not to mention the peculiar danger of saving a patient from a horrible aneurysm only to find that his or her personality is irrevocably changed--and not for the better.  Unfortunately, the work was somewhat diluted by its lack of focus.  Nevertheless, highly recommended


Output: POS