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