Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: fascintaing book w/an important lesson

I think that this is a very good book. It has a lot of very interesting stuff in it and it also keeps you in great suspense so you can't put the book down. There is also a small mystery in it that you can try to solve before the book tells you the answer. This book also teaches a very important lesson, that poeple need to be united to achieve something great. In the book, the lesson is very clear and it gives a very good story to make you understand it. The lesson that the book teaches is especially important now, after the 911 event of terrorism. I really recommend this book to a lot of people because it's really a very good book. The other Chrestomanci novels are also very good books for people to read too.