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