CREATE TABLE table_10215 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Which average Crowd has a Home team of south melbourne?
SELECT AVG("Crowd") FROM table_10215 WHERE "Home team" = 'south melbourne'
SELECT AVG("Crowd") FROM "table_10215" WHERE "Home team" = 'south melbourne'