user: Question: Which Date has a Distance of 500 m?
Columns: ['Distance', 'Time', 'Date', 'Location', 'Notes']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ["Men's Speed skating", "Men's Speed skating", "Men's Speed skating", "Men's Speed skating", "Men's Speed skating"]
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Distance" = '500 m';