Harry is high. Harry is strong. Fiona is small. Fiona is little. Alan is kind. Anne is rough. Anne is poor. If someone is not big then they are rough. If someone is not bad then they are nice. If someone is kind then they are wealthy. If someone is wealthy and not sad then they are quiet. If someone is rough and not big then they are dull. If someone is small and little then they are sad. If someone is sad and not wealthy then they are poor. All nice people are smart. 
Harry is not dull.