user: Question: Which Date had a City/Location of Vancouver, British Columbia?
Columns: ['Race Name', 'Circuit', 'City/Location', 'Date', 'Pole position', 'Fastest lap', 'Winning driver', 'Winning team', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Marlboro Grand Prix of Miami Presented by Toyota', 'Bicentennial Park', 'Miami, Florida', 'March 5', 'Michael Andretti', 'Scott Pruett', 'Jacques Villeneuve', 'Team Green', 'Report']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "City/Location" = 'Vancouver, British Columbia';