CREATE TABLE table_57447 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What is the smallest crowd for victoria park?
SELECT MIN("Crowd") FROM table_57447 WHERE "Venue" = 'victoria park'
SELECT MIN("Crowd") FROM "table_57447" WHERE "Venue" = 'victoria park'