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