CREATE TABLE table_name_45 (episode_number INT, event_4 VARCHAR, event_3 VARCHAR)

What episode had sumo ball for event 3 and the wall for event 4?
SELECT AVG(episode_number) FROM table_name_45 WHERE event_4 = "the wall" AND event_3 = "sumo ball"
SELECT AVG("episode_number") FROM "table_name_45" WHERE "event_3" = "sumo ball" AND "event_4" = "the wall"