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