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