Instruct: Classify Amazon reviews into positive or negative sentiment
Query: C.F. Walklin Jr.

Three and a half stars?! I tried to find an efficiant form of suicide half-way through it! This was, by far, the biggest piece of excrement I've ever bore witness. It switches from an M-16 on one page, then to an AK-47 on the next! I can just see Mr. Frakes when he wrote this book, while laughing a wicked laugh. "Ahh! That'll be profound!" Mother of God! Do yourself a favor, DO NOT read this book! It's horrifying!