Anne is round. Bob is not smart. Dave is quiet. Gary is young. All round, rough people are not quiet. If someone is round then they are young. If Dave is rough and Dave is big then Dave is smart. All young people are smart. Big, rough people are green. If someone is smart and not young then they are not round. If someone is young and not green then they are rough. If someone is round and not rough then they are not quiet.
Bob is green.