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