Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unsportsmanlike behavior rewarded

The main character, Arthur, decides to have a gymnastics contest at his birthday party. He announces to his friends that he will win the award for the best all-around gymnast, and repeatedly tells them that he is better at gymnastics than they are. Then he spends his party sulking because they can do gymnastics well also. His friends then decide to give him the award for best all-around gymnast.