Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wonderful book

The day I bought this book I sat down on the couch and read for the rest of the day. William Nicholson's Slaves of the Mastery isn't just a book for children and teens. It deals with mature issues such as slavery and violence. If you read The Wind Singer and didn't like it enough to read the sequel, reconsider, because this book is so much better. Kestrel, Bowman and Mumpo are unique, appealing characters and there is always a new spin on the story. As for me, I'm anxiously awaiting the third book in the trilogy. Read this book- you won't regret it!