CREATE TABLE table_58197 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Who is the home team that played at venue MCG?
SELECT "Home team" FROM table_58197 WHERE "Venue" = 'mcg'
SELECT "Home team" FROM "table_58197" WHERE "Venue" = 'mcg'