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