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