Instruct: Classify an Amazon review into positive or negative sentiment.
Query: A very enjoyable book

This was a very enjoyable book because the characters and plot were so entertaining. Two things detracted from it being a great book. First, the sexual ennuendos were poorly written. Instead of arousing interest, I was thinking, "How lame, enough already." Secondly, the plot was very busy, which necessitated the author quickly wrapping up all the loose ends at the end of the book. However, these two problems were relatively minor, and I could recommend this book heartily.