Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Best and Biggest

Harry Potter and the Order of the Phoenix is the fifth book in a series of seven. The biggest so far, having 870 pages, it blows the reader away with a superb plot and story line. It starts with suspense and imagination, but soon enough, Harry is transported back into the magical world of Hogwarts, the school of Witchcraft and Wizardry. But this time, something is different. After the happenings of the last book, Harry is different, and supposedly, there is a murder out to kill him. With a fantastic climax and plot twist, I recommend this book to all avid fiction readers.