Bob is nice. Bob is quiet. Bob is rough. Bob is smart. Charlie is furry. Charlie is nice. Charlie is rough. Charlie is smart. Fiona is big. Fiona is quiet. Fiona is round. Fiona is smart. Gary is furry. Gary is quiet. Gary is round. Gary is smart. If someone is smart and furry then they are quiet. If Fiona is rough then Fiona is big. If Bob is big and Bob is nice then Bob is quiet. Round people are rough. All round, big people are smart. All round, rough people are nice. All big people are smart. Furry, quiet people are rough.
Charlie is not quiet.