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