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