Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DULL

DullThe book Muhammad Ali: Champion is a boring biography of Muhammad Ali. This book tells about what Ali has been through and mainly about his boxing career.I wouldn't recommend this book to anyone. If you've heard of Ali and want to know more about him this would not be the book to get. Once you start reading this book it's kind of interesting but as you get to the middle it gets slow. I didn't this book because as I was reading it I lost my interest.