user: Question: What is the Country of the half marathon Event?
Columns: ['Country', 'Event', 'Time', 'Date', 'Place']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['CPV', 'marathon', '2:19:14', 'April 10, 2005', 'Rotterdam']
SQL:

assistant: SELECT "Country" FROM "Table" WHERE "Event" = 'half marathon';