CREATE TABLE table_55748 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the home team score at North Melbourne's away game?
SELECT "Home team score" FROM table_55748 WHERE "Away team" = 'north melbourne'
SELECT "Home team score" FROM "table_55748" WHERE "Away team" = 'north melbourne'