Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A wonderful book!!! Looking forward to Mr. Riley's next.

Prior to reading Harlem, I had just finished a book that outlined the Harlem Renaissance from a historical view. The book left me wanting more. Harlem poured in the color to what had been a gray void to me. This is a wonderful book, with endearing characters and excellent writing. I look forward to Mr. Riley's next book. I would love to talk to Mr. Riley about his research and development of this book.