Instruct: Classify the given review into positive or negative sentiment.
Query: Harry Potter

Harry Potter - a great series! Harry Potter books present adventure and fantasy all rolled into one! J.K. Rowling makes Harry's world seem almost real - I find myself re-reading the Harry Potter series all the time, and I can't put them down! I think today was the tenth time I re-read Harry Potter and the Chamber of Secrets. This book is just as good as the first one - I suggest you read it!