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