Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Biggest Dissapointment

When I heard the title of the new book, I was looking forward to it. After seeing the size of the book, I was eager to get my eyes through it. This book was the biggest dissapointment so far :( It was pointless! We learn that Harry's going to kill Voldemort if he doesn't kill Harry first. SO WHAT?! That's a GIVEN is it not?! How dare she write such a long, pointless book. And what was it with Cho and Sirius?! Surely she could have written a lot better. Her best book was Prisoner of Azkaban. Her worst was this. If you're a big fan of Harry Potter, go ahead and read this .... Otherwise, don't bother. It doesn't get you anywhere.