Gary is green. Harry is blue. Harry is furry. Harry is nice. Harry is not round. Harry is smart. Harry is young. If someone is round then they are green. If Harry is green then Harry is smart. If someone is round and green then they are smart. All young, green people are not round. Nice, green people are young. If Harry is not smart and Harry is not round then Harry is young. If Harry is nice and Harry is not young then Harry is blue. If someone is not blue then they are nice.
Gary is not nice.