CREATE TABLE table_52190 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Who was South Melbourne's away team opponent?
SELECT "Away team" FROM table_52190 WHERE "Home team" = 'south melbourne'
SELECT "Away team" FROM "table_52190" WHERE "Home team" = 'south melbourne'