Charlie is rough. Dave is cold. Dave is quiet. Gary is cold. Gary is quiet. Gary is young. Harry is green. Harry is quiet. Harry is rough. Harry is round. Harry is smart. Harry is young. If Gary is green and Gary is young then Gary is rough. Rough people are smart. If Charlie is smart then Charlie is cold. If someone is quiet then they are round. If someone is cold then they are young. All quiet people are round. If someone is young and rough then they are round. If someone is round then they are green. If Gary is young and Gary is round then Gary is smart.
Harry is not quiet.