CREATE TABLE table_204_813 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "event" TEXT, "notes" TEXT)

how long did this person throw the javelin in the commonwealth games ?
SELECT "notes" FROM table_204_813 WHERE "competition" = 'commonwealth games'
SELECT "notes" FROM "table_204_813" WHERE "competition" = 'commonwealth games'