Instruct: Classify a review into positive or negative sentiment.
Query: 5 stars

Classic. Whenever we can't find a new book that's interesting we go back and re-read the Percy Jackson series...we've read it about 6 times now and it's still fun. My kid knows way more about Greek mythology now than I did at her age. Highly recommend this series (Percy Jackson and the Olympians) and the follow-up series, the Heroes of Olympus.