CREATE TABLE table_42961 ("Year" FLOAT, "Result" FLOAT, "World Rank" TEXT, "Location" TEXT, "Date" TEXT)

What's the lowest Year with a World Rank of 5th, with a Result greater than 20.31?
SELECT MIN("Year") FROM table_42961 WHERE "World Rank" = '5th' AND "Result" > '20.31'
SELECT MIN("Year") FROM "table_42961" WHERE "Result" > '20.31' AND "World Rank" = '5th'