CREATE TABLE table_55191 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Which team played against North Melbourne as the home team?
SELECT "Home team" FROM table_55191 WHERE "Away team" = 'north melbourne'
SELECT "Home team" FROM "table_55191" WHERE "Away team" = 'north melbourne'