CREATE TABLE table_74749 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the away team when the game was at corio oval?
SELECT "Away team" FROM table_74749 WHERE "Venue" = 'corio oval'
SELECT "Away team" FROM "table_74749" WHERE "Venue" = 'corio oval'