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