Instruct: Classify a review into positive or negative sentiment.
Query: It is a great book!

I think City of Stars is a really great book because it is exciting, has great charachters, and an interesting plot. I liked City of Masks, also and strongly suggest you read that first to enjoy this book much more. This is a good sequel to City of Masks, I enjoyed meeting Lucien again and I like Georgia, the protagonist. I can't wait for City of Flowers! (The next book in the trilogy will be published soon... I hope!)