Dave is big. Dave is huge. Charlie is short. Charlie is thin. Anne is wealthy. Gary is bad. Gary is dull. If someone is not high then they are bad. If someone is not poor then they are kind. If someone is wealthy then they are quiet. If someone is quiet and not rough then they are nice. If someone is bad and not high then they are sad. If someone is short and thin then they are rough. If someone is rough and not quiet then they are dull. All kind people are smart. 
Gary is not smart.