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