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