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