Bob is blue. Bob is smart. Bob is young. Charlie is cold. Charlie is rough. Gary is smart. Gary is young. Harry is green. Harry is not quiet. Harry is smart. If Gary is not smart then Gary is young. All young, rough things are blue. Cold, smart things are quiet. Young, quiet things are rough. If something is green and blue then it is young. If something is not rough then it is green. If something is not rough then it is blue. If something is quiet and not young then it is not rough.
Gary is quiet.