Instruct: Classify Amazon reviews into positive or negative sentiment
Query: WORST.BOOK.EVER.

Even though I looked up the book on here before I bought it, I should have given it a second thought. It had nothing but positive reviews, 4 and 5 stars. But this had to be the single most appallingly unpleasant book I've read in a long time.The story starts bleakly enough but it only gets worse. A little warning that it's the most violent and disgustingly graphic would have been nice as well. And the ending?! Can we even call it that? At least American Psycho left me with something to ponder about after I slaved through all that depravity.