Charlie is high. Charlie is big. Anne is thin. Anne is short. Dave is smart. Bob is sad. Bob is dull. If someone is not strong then they are sad. If someone is not bad then they are kind. If someone is smart then they are wealthy. If someone is wealthy and not poor then they are nice. If someone is sad and not strong then they are rough. All rough people are little. If someone is thin and short then they are poor. If someone is poor and not wealthy then they are dull. If someone is dull then they are young. If someone is kind then they are clever. All clever people are quiet. All nice people are old. 
Dave is old.