Charlie is blue. Erin is blue. Erin is cold. Erin is nice. Erin is not round. Erin is young. Gary is rough. If someone is rough then they are round. Round people are red. If Charlie is nice and Charlie is blue then Charlie is young. If someone is round and rough then they are red. All red people are cold. All blue people are young. Blue, round people are rough. If someone is round then they are not blue.
Gary is not blue.