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