CREATE TABLE table_56582 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What is the Away Team score of North Melbourne?
SELECT "Away team score" FROM table_56582 WHERE "Away team" = 'north melbourne'
SELECT "Away team score" FROM "table_56582" WHERE "Away team" = 'north melbourne'