Bob is not blue. Bob is nice. Bob is rough. Bob is smart. Bob is young. Erin is not blue. Erin is nice. Gary is blue. Gary is young. Harry is smart. Harry is young. If someone is nice then they are green. Quiet people are nice. Young people are smart. If someone is smart then they are quiet. All smart, green people are rough. If Gary is young and Gary is green then Gary is quiet. Nice people are green. If someone is not smart then they are rough.
Erin is quiet.