Dave is red. Dave is rough. Dave is young. Gary is rough. Gary is white. Harry is big. Harry is rough. If something is rough and young then it is big. If Gary is not cold and Gary is not quiet then Gary is not big. All cold things are rough. If something is red then it is not cold. If something is big and not cold then it is not quiet. If something is big and quiet then it is red.
Gary is not white.