CREATE TABLE table_58214 ("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 score for the game played at MCG?
SELECT "Away team score" FROM table_58214 WHERE "Venue" = 'mcg'
SELECT "Away team score" FROM "table_58214" WHERE "Venue" = 'mcg'