CREATE TABLE table_42569 ("Date" CLOB, "Home captain" CLOB, "Away captain" CLOB, "Venue" CLOB, "Result" CLOB)

Who was the Away Captain when the Home Captain was Joe Darling at Melbourne Cricket Ground?
SELECT "Away captain" FROM table_42569 WHERE "Venue" = 'melbourne cricket ground' AND "Home captain" = 'joe darling'
SELECT "Away captain" FROM "table_42569" WHERE "Home captain" = 'joe darling' AND "Venue" = 'melbourne cricket ground'