Dave is big. Dave is quiet. Dave is red. Dave is rough. Dave is round. Dave is white. Dave is young. Gary is big. Gary is rough. Gary is round. Gary is young. Harry is quiet. Harry is red. Harry is rough. Harry is round. Harry is young. Round people are red. If someone is round then they are red. If someone is quiet then they are round. If someone is big and white then they are round. If someone is big then they are white. All white people are quiet.
Gary is not white.