Dave is big. Dave is huge. Alan is thin. Alan is little. Charlie is kind. Anne is sad. Anne is poor. If someone is not high then they are sad. If someone is not rough then they are smart. If someone is kind then they are wealthy. If someone is wealthy and not dull then they are nice. If someone is sad and not high then they are bad. If someone is thin and little then they are dull. If someone is dull and not wealthy then they are poor. All smart people are quiet. 
Alan is not poor.