CREATE TABLE table_57642 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the date that featured a score of 8.8 (56) for the away team?
SELECT "Date" FROM table_57642 WHERE "Away team score" = '8.8 (56)'
SELECT "Date" FROM "table_57642" WHERE "Away team score" = '8.8 (56)'