Alan is round. Alan is rough. Alan is nice. Bob is round. Bob is rough. Bob is blue. Dave is round. Dave is red. Dave is blue. Harry is round. Harry is red. Harry is blue. If someone is cold and kind and red then they are blue. If someone is green and red then they are cold. If someone is green and round then they are rough. If someone is rough and round then they are nice. If someone is green and round then they are young. If someone is blue and red and nice then they are rough. If someone is blue and round then they are green.
Dave is not blue.