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