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