Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: GREAT book!!!

Since it had been 37 years since I had taken a chemistry class, I was a little afraid of doing well. I got this book early on, and it was a HUGE help. It was written by a teacher who really knew his stuff. He encourages you to learn how to work the problems versus letting your fear take over and you feel forced the memorize them. I recommend this book VERY highly.