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