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