Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best Nancy Drew book Ever!

I have read many Nancy Drew books and I am continuing to read them. This is my ALL-TIME favorite. The whole plot may not seem that exciting before you begin to read, but once you start you can't stop! The reason this book is my favorite is because there is exciting things that keep you on your toes throughout the book - but the ending.. it's just.. FABULOUS! It's so exciting! Unlike other mystery stories that just keep explaining why the villain did what, this is action-filled. Well, what happens is.. Wait, I'm not giving it away, you'll have to read to find out! :)