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