Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The best book I've ever read!

After my friend read this book she said that it was my type of book, so I gave it a try. I simply spent all my time on spring vacation reading this book. I couldn't put it down. It took me just a few days to finish it and since then, I can read a huge book in one day! I can't wait for the third book!