CREATE TABLE table_53691 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Who was the away team at Western Oval?
SELECT "Away team" FROM table_53691 WHERE "Venue" = 'western oval'
SELECT "Away team" FROM "table_53691" WHERE "Venue" = 'western oval'