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