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: A missing link for practitioners of "hard" martial arts. . Many buyers of this book are undoubtedly practitioners of "hard" arts seeking guidance on application of the more dubious moves of their disciplines in street confrontations. If readers expect to be instructed in realistic applications of Karate or Taekwondo blocks and stances, they may feel misled by the title since such subjects are barely touched upon.    MacYoung's purpose here is a different one. "Hard" arts generally teach practitioners to exchange blows at a certain distance. Grappling arts show how to fight an opponent from a clinch or on the ground. Authors like Geoff Thompson emphasize sizing up a potential attacker and resolving with pre-emptive strikes. What none of these address is how to handle the wild onrush of an attacker who has already initiated his assault and who is not going to stand back and trade blows.    This book aims to make "hard" martial arts street effective not by re-explaining their existing techniques but by filling in certain gaps, principally by applying "soft" blocking and takedown concepts from Wing Chun and Silat. Karate/Taekwondo practitioners may find this difficult to reconcile with their own styles - unless they subscribe to the opinion (not addressed in this book) that the "hard" arts once had a considerable "soft" content, and that movements like those now labelled "blocks" were originally something else altogether - but is a valuable and effective complement nevertheless. The book also includes good advice on the nature of violence and how to avoid it, and emphasizes "winning while escaping".    Stylistically, MacYoung's easygoing tone and humour may or may not please, but behind it is a well written book which succeeds in communicating concept and technique in words. Some sections can at first seem repetitive or difficult to follow (not helped by the lack of clear labelling of photos - my one major gripe), but this is due to the complexity of the concepts examined. This book requires more than one reading to get the most out of it, and will certainly reward those willing to do so.
Example Output: POS

Example Input: Not quite what I was expecting . A Journey to the Center of the Earth did not turn out to be quite what I was expecting; I can't say quite why, however, because I'm not entirely certain what those expectations were.  I hadn't read the novel previously, but I thought I knew what it was about.  As a result, I think I was expecting more drama than Verne delivers, or perhaps I simply wanted the book to be more than it is.  Most likely I was conflating Verne's novel with other texts: movie adaptations of the novel itself, for instance, in which considerably more in the way of actual antagonism--as opposed to the perils of nature itself--occurs; or hollow world stories, in which entire societies thrive on the inside of the earth's crust beneath the rays of a sun that lies at the planet's center.  A Journey to the Center of the Earth is neither of these things, of course, and if I underwent any disillusionment, it was purely of my own making.    Understood on its own terms, the novel is, at the very least, interesting, but, truthfully, not much happens.  The narrator's speculations (as well as his fevered dreams during times of travail) suggest a much wilder adventure than actually takes place.  Much of the action involves the trio of explorers stumbling around in caverns and tunnels, and much of the impediment takes the form of hunger, dehydration, or equipment loss.  In fact, as best I can judge, they really don't approach anywhere near the center of the earth, although they do travel quite a distance laterally before resurfacing.    The real joy is the interactions between the characters, primarily the trio of protagonists: the young narrator, his scientist uncle, and their silent, idiosyncratic guide.  The expedition leader is an archetypal nutty professor, whose words and actions seem nonsensical to those not privy to his thought processes; his nephew, the narrator, alternates between sheer wonder at his surroundings, and sheer terror at the likelihood of spending the rest of his short life surrounded by them; Hans, the guide, says almost nothing but performs his duties in an exemplary manner, and insists on being paid weekly rather than all at once, even while under the earth (a square deal, in his eyes).  Their interactions with each other, and with the variety of Icelandic folk they encounter on their way to the volcano which is their means of ingress, are wittily and cleverly depicted.  These character moments are the high point of the novel; one wonders how much of their clever interplay originates with Verne and how much is an invention of the translator (who, in this edition, remains sadly anonymous).  Whether the novel's tone in its English version is added or simply preserved in translation, full marks to whomever this perceptive soul is.    Though one reflexively considers Jules Verne a "science fiction" writer of a primitive sort, this is really more of an adventure tale and, taken as such, it is generally successful.  The adventurers don't explore a strange new world so much as become more intimately acquainted with the world they already know, but if the reader doesn't go in expecting flights of pure fancy, the novel is rather satisfying.    Postscript: I should point out that this review refers to the Signet Classic mass market paperback edition of the novel, which features an afterword by Michael Dirda.  Knowing Amazon, it's possible that this review will surface under several different versions, and without clarity, we have nothing.
Example Output: POS

Example Input: Not much here, I recommend  Birnbaum's Disneyland  instead. . There are some good hints here, but do not be mislead by the title.   For a complete book on Disneyland and California Adventure, I highly recommend Birnbaum's Disneyland Resort 2003, Expert Advice From The Inside Source.  Birnbaum's Disneyland is updated annually and published every year
Example Output:
NEG