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