Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What We Have All Been Waiting For.

I think the best comparison to describe how awe-inspiring this book is, is to say it like this: This book is to zombie fans what the Bible is to Christians and its printing is practically the second-freaking-coming. It is exhaustingly thourough, both in its history and its filmography. This book could be justifiably purchased for so much more than a measley 20 dollars. If you are a zombie fan, buy this book over food.