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