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