Anne is green. Anne is round. Charlie is green. Erin is green. Gary is big. Gary is kind. Gary is round. If Erin is green then Erin is young. All blue people are furry. All big people are blue. If someone is round then they are big. Blue, round people are young. If someone is young then they are round. If someone is round and green then they are young. If someone is blue then they are round.
Erin is not young.