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