Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cool Book

This book was really great it was a little long and it took a while to get into it but when you did you just couln't put it down. The ending is the best but still it was great book. I also like how they how to go around town asking people about the thing and they won't answer and I also like the black stuff they get over their heart when the thing is going to go after them. This book is really great and you so read it.