Alan is high. Alan is strong. Fiona is short. Fiona is tiny. Gary is smart. Dave is bad. Dave is poor. If someone is not big then they are bad. If someone is not rough then they are clever. If someone is smart then they are nice. If someone is nice and not dull then they are wealthy. If someone is bad and not big then they are sad. All sad people are thin. If someone is short and tiny then they are dull. If someone is dull and not nice then they are poor. If someone is poor then they are young. If someone is clever then they are kind. All kind people are quiet. All wealthy people are old. 
Gary is not old.