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