Instruct: Classify a review into positive or negative sentiment.
Query: BEST BOOK!

The Outcast of Redwall is one of the best books ever written! It deserves 500 stars! It is about Sunflash the Mace, lord of Salamandastron, Swartt Sixclaw, a weasel, and Swartt's son Veil. It has a very intriguing plot where Sunflash the Mace and Swartt Sixclaw swear to kill each other and Veil is taken in at Redwall when just a baby. He is cast out seasons later for trying to commit a murder as well as many other things. The end is totally unpridictable and very exciting.