CREATE TABLE table_78277 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What is the home team at the venue mcg?
SELECT "Home team" FROM table_78277 WHERE "Venue" = 'mcg'
SELECT "Home team" FROM "table_78277" WHERE "Venue" = 'mcg'