Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent source of information; buy it !

I was in an accident and I bought Dan Baldyga's excellent book; I got a tremndous return on this purchase! The insurance people wanted to low-ball me; Baldyga's book taught me to hang in there for more cash, which I did. This book is easy to read and understand. He was an adjuster so he knows the game from the insurance perspective very well. I gave this book to my brother who is trying to settle his own claim; he got a bigger offer from the insurance company thanks to this great book.