Erin is strong. Erin is high. Alan is small. Alan is tiny. Gary is quiet. Bob is sad. Bob is rough. If someone is not big then they are sad. If someone is not poor then they are kind. If someone is quiet then they are wealthy. If someone is wealthy and not bad then they are nice. If someone is sad and not big then they are dull. All dull people are little. If someone is small and tiny then they are bad. If someone is bad and not wealthy then they are rough. If someone is rough then they are young. If someone is kind then they are clever. All clever people are smart. All nice people are experienced. 
Alan is not young.