user: Question: Who was the Away Captain when the Home Captain was Joe Darling at Melbourne Cricket Ground?
Columns: ['Date', 'Home captain', 'Away captain', 'Venue', 'Result']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['13,14,16 Dec 1901', 'Joe Darling', 'Archie MacLaren', 'Sydney Cricket Ground', 'ENG by Inns&124 runs']
SQL:

assistant: SELECT "Away captain" FROM "Table" WHERE "Venue" = 'Melbourne Cricket Ground' AND "Home captain" = 'Joe Darling';