Question: What Position was achieved in the World Championships Competition in Tokyo, Japan?
SQL: SELECT "Position" FROM "2-15489384-1" WHERE "Competition" = 'World Championships' AND "Venue" = 'Tokyo, Japan';

Question: Which Competition was 1st Position with 57.03 in Notes?
SQL: SELECT "Competition" FROM "2-15489384-1" WHERE "Position" = '1st' AND "Notes" = '57.03';

Question: What is the earliest Year for 400m h Event with 54.86 in Notes?
SQL: SELECT MIN("Year") FROM "2-15489384-1" WHERE "Event" = '400m h' AND "Notes" = '54.86';