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