CREATE TABLE table_54940 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Where did the away team score 11.15 (81)?
SELECT "Venue" FROM table_54940 WHERE "Away team score" = '11.15 (81)'
SELECT "Venue" FROM "table_54940" WHERE "Away team score" = '11.15 (81)'