CREATE TABLE table_51916 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Who was the away team when they scored 12.9 (81) at the game?
SELECT "Away team" FROM table_51916 WHERE "Away team score" = '12.9 (81)'
SELECT "Away team" FROM "table_51916" WHERE "Away team score" = '12.9 (81)'