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