CREATE TABLE table_74641 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Who was the away team playing the home team North Melbourne?
SELECT "Away team" FROM table_74641 WHERE "Home team" = 'north melbourne'
SELECT "Away team" FROM "table_74641" WHERE "Home team" = 'north melbourne'