CREATE TABLE table_33671 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

WHAT WAS COLLINGWOOD'S LOWEST CROWD NUMBER WHEN PLAYING AS THE AWAY TEAM?
SELECT MIN("Crowd") FROM table_33671 WHERE "Away team" = 'collingwood'
SELECT MIN("Crowd") FROM "table_33671" WHERE "Away team" = 'collingwood'