CREATE TABLE table_33143 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What away team played at Western Oval?
SELECT "Away team" FROM table_33143 WHERE "Venue" = 'western oval'
SELECT "Away team" FROM "table_33143" WHERE "Venue" = 'western oval'