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