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