Anne is green. Anne is nice. Charlie is blue. Charlie is rough. Erin is blue. Erin is young. Harry is quiet. Young people are furry. All blue, quiet people are rough. All nice people are quiet. If Charlie is nice then Charlie is green. Quiet people are young. If Erin is quiet and Erin is nice then Erin is blue. If someone is furry then they are blue. If someone is not rough then they are furry.
Charlie is quiet.