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