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