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