Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Save your money

This book does not tell you how to eliminate back and neck pain, it tells how good the author is and why you should see a chiropractor. The book fills with his patients' great testimonies, and chiropractic philosophy. Half of the book is under the Bonus Health Section which is a waste of time. Even the author advises you not to read if you know all you want to know by this time!