Dave is high. Dave is strong. Erin is little. Erin is small. Harry is smart. Gary is poor. Gary is sad. If someone is not huge 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 clever. If someone is poor and not huge then they are rough. All rough people are thin. If someone is little and small then they are dull. If someone is dull and not wealthy then they are sad. If someone is sad then they are young. If someone is kind then they are nice. All nice people are quiet. All clever people are old. 
Harry is not old.