user: Question: The Western Oval venue has what date?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Melbourne', '17.12 (114)', 'South Melbourne', '6.15 (51)', 'MCG', 28250.0, '25 May 1957']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Venue" = 'Western Oval';