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