CREATE TABLE table_12769 ("Year" FLOAT, "Competition" TEXT, "Venue" TEXT, "Distance" TEXT, "Result" TEXT)

What year was the competition vitry-sur-seine humarathon?
SELECT AVG("Year") FROM table_12769 WHERE "Competition" = 'vitry-sur-seine humarathon'
SELECT AVG("Year") FROM "table_12769" WHERE "Competition" = 'vitry-sur-seine humarathon'