Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good book

it was a very cool book i enjoyed it. but it was very confusing until someone expland it to me but other wise great book. wish that it was not as confusing and that it did not have as much details. i just wanted to here what was going on. i did not need to know all of those little details. but some of them were useful but not all of them.