Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Seven Steps to Stop a Heart Attack

I have studied heart disease since having a heart attack two years ago. Thanks to the internet, I have been able to spend hundreds of hours on stem cell research, chronic heart disease, modern drug treatment, and many other topics related to this condition. Dr. Bob Arnot's book is an outstanding effort to write a clear plan of attack for anyone affected by this condition.The book is very up-to-date. It mentions work that has taken place in the last year or so. It also manages to explain in words that most of us can easily understand what these tests mean and how they can be applied.This book was a real page turner. It is exciting and optimistic. If you ever wondered what those drugs you are taking did, then this book will tell you. If you what to know about stenting, start here. If you knew someone who had a heart by-pass ten years ago and want an update on the procedure, read this.This is a very good book.