Please list the names of all the Olympic games that John Aalberg has taken part in.
name of the Olympic games refers to games_name;
SELECT T1.games_name FROM games AS T1 INNER JOIN games_competitor AS T2 ON T1.id = T2.games_id INNER JOIN person AS T3 ON T2.person_id = T3.id WHERE T3.full_name = 'John Aalberg'