Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Best way to appreciate the Grand Canyon

I studied this book for 6 months before we hiked to the bottom and back up (of course)the Grand Canyon. Were it not for the information I absorbed from reading, and yes, studying this book we certainly would not have appreciated the grandeur of what we were witnessing. I had not studied Earth Science for 40 years and I found this book spoke simply and intelligently and was well organized. I cannot use enough superlatives to describe how much valuable knowledge was learned in such a short amount of time. Also, my hiking companions truly enjoyed my "sharing" all the knowledge with them as we hiked down and explored for 3 days. Thank you, thank you to the authors!!