user: ### NOW ANSWER:
Question: What year was the competition Vitry-sur-Seine Humarathon?
Columns: ['Year', 'Competition', 'Venue', 'Distance', 'Result']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2006.0, 'Sevilla Half Marathon', 'Seville , Spain', 'Half marathon', '1st']
SQL:

assistant: SELECT AVG("Year") FROM "Table" WHERE "Competition" = 'Vitry-sur-Seine Humarathon';