CREATE TABLE table_78412 ("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_78412 WHERE "Venue" = 'western oval'
SELECT "Away team" FROM "table_78412" WHERE "Venue" = 'western oval'