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