Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great business book!

I thought that this book was going to be about negotiations.It's a lot more than that. After years of doing negotiations, I was skeptical that a new concept could emerge. I was very surprised by the concepts not because it was incredibly revolutionary, but because it had a lot of common sense.The book teaches business strategy and negotiations. It forces you to look at your business and focus on the right partners and business channels to be able to successfully negotiate.This book has been invaluable to me and would recommend it to any business person.