CREATE TABLE table_58077 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

When mcg is the Venue what's the Away team?
SELECT "Away team" FROM table_58077 WHERE "Venue" = 'mcg'
SELECT "Away team" FROM "table_58077" WHERE "Venue" = 'mcg'