Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Punch you in the gut Book

Wow! This book took my breath away! A solid punch in the gut.Made me miss a day of work to complete (Warning!) and had me howling in the end, something I don't remember doing from "To kill a Mockingbird" and "The Snowgoose" over two decades ago.Maybe a little slow initially nad sentimental towards the end, but a true masterpiece.