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

in what cities did the competitor participate in the olympics ?
SELECT "venue" FROM table_204_813 WHERE "competition" = 'olympic games'
SELECT "venue" FROM "table_204_813" WHERE "competition" = 'olympic games'