CREATE TABLE table_51674 ("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 score for the Venue named MCG?
SELECT "Home team score" FROM table_51674 WHERE "Venue" = 'mcg'
SELECT "Home team score" FROM "table_51674" WHERE "Venue" = 'mcg'