Question: What is the year of the tournament played at melbourne, australia?
SQL: SELECT AVG("Year") FROM "2-12955969-1" WHERE "Venue" = 'melbourne, australia';

Question: What is earliest year that had a 50km event with a 2nd place result played in london, united kingdom?
SQL: SELECT MIN("Year") FROM "2-12955969-1" WHERE "Event" = '50km' AND "Result" = '2nd' AND "Venue" = 'london, united kingdom';

Question: What is the result of the World Race Walking Cup tournament played before the year 2010?
SQL: SELECT "Result" FROM "2-12955969-1" WHERE "Year" > 2010.0 AND "Tournament" = 'World Race Walking Cup';