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