Erin is high. Erin is big. Fiona is short. Fiona is small. Dave is wealthy. Gary is dull. Gary is poor. If someone is not huge then they are dull. If someone is not bad then they are nice. If someone is wealthy then they are quiet. If someone is quiet and not sad then they are kind. If someone is dull and not huge then they are rough. All rough people are tiny. If someone is short and small then they are sad. If someone is sad and not quiet then they are poor. If someone is poor then they are young. If someone is nice then they are clever. All clever people are smart. All kind people are old. 
Dave is not old.