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