CREATE TABLE table_56568 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What is the name of the away team that scored 15.9 (99)?
SELECT "Away team" FROM table_56568 WHERE "Away team score" = '15.9 (99)'
SELECT "Away team" FROM "table_56568" WHERE "Away team score" = '15.9 (99)'