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