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