CREATE TABLE table_54549 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Which team has an away score of 15.9 (99)?
SELECT "Away team" FROM table_54549 WHERE "Away team score" = '15.9 (99)'
SELECT "Away team" FROM "table_54549" WHERE "Away team score" = '15.9 (99)'