Instruct: Classify Amazon reviews into positive or negative sentiment
Query: THANK YOU AMAZON

I saw an article on this book in CIVILIZATION magazine and looked forward to buying it. Just as I was about to call the Library of Congress and order it, I thought I would check Amazon. Thankfully, Amazon reviewers noted the conspicuous shortcomings of this expensive book. Thank you, Amazon for saving me money. Buy the magazine - all the maps are in color.