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