user: Question: Tell me the away team score for 27 April 1974 and veue of MCG
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Fitzroy', '18.12 (120)', 'Collingwood', '17.9 (111)', 'Junction Oval', 28471.0, '25 April 1974']
SQL:

assistant: SELECT "Away team score" FROM "Table" WHERE "Date" = '27 April 1974' AND "Venue" = 'MCG';