CREATE TABLE table_70579 ("Tie no" TEXT, "Home team" TEXT, "Score" TEXT, "Away team" TEXT, "Attendance" TEXT)

Who was the away team when the attendance was 7,891?
SELECT "Away team" FROM table_70579 WHERE "Attendance" = '7,891'
SELECT "Away team" FROM "table_70579" WHERE "Attendance" = '7,891'