Charlie is young. Charlie is round. Charlie is red. Dave is nice. Dave is kind. Dave is green. Dave is blue. Gary is red. If someone is nice and young and blue then they are red. If someone is nice and cold then they are young. If someone is cold and rough and round then they are young. If someone is rough and kind and blue then they are cold. If someone is round and green then they are red. If someone is nice and blue and green then they are rough.
Dave is not young.