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