CREATE TABLE table_77873 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

If the Away team is north melbourne, what's the Home team score?
SELECT "Home team score" FROM table_77873 WHERE "Away team" = 'north melbourne'
SELECT "Home team score" FROM "table_77873" WHERE "Away team" = 'north melbourne'