user: Question: When was the incident in Pol-e Khomri?
Columns: ['Date', 'Location', 'Nature of incident', 'Circumstances', 'Casualties']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['2011-01-11', 'Pol-e Khomri', 'Non-hostile', 'Accidental discharge', '1 injured']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Location" = 'Pol-e Khomri';