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