Find the name and membership level of the visitors whose membership level is higher than 4, and sort by their age from old to young.
SELECT name ,  Level_of_membership FROM visitor WHERE Level_of_membership  >  4 ORDER BY age DESC
SELECT name ,  Level_of_membership FROM visitor WHERE Level_of_membership  >  4 ORDER BY age DESC
[{'Name': 'Fernando Gago', 'Level_of_membership': 6}, {'Name': 'Gonzalo Higuaín ', 'Level_of_membership': 8}, {'Name': 'Guti Midfielder', 'Level_of_membership': 5}]