Question: Who's the opposition at Westpac Stadium when the attendance is 31,853?
SQL: SELECT "Opposition" FROM "2-10866704-9" WHERE "Stadium" = 'Westpac Stadium' AND "Attendance" = '31,853';

Question: When was the opposition Sydney FC on Round 19?
SQL: SELECT "Date" FROM "2-10866704-9" WHERE "Opposition" = 'Sydney FC' AND "Round" = 'Round 19';

Question: What round was Adelaide United the opposition with an attendance of 18,345?
SQL: SELECT "Round" FROM "2-10866704-9" WHERE "Opposition" = 'Adelaide United' AND "Attendance" = '18,345';

Question: Who was the opposition at 11,682 excl. exhibition match?
SQL: SELECT "Opposition" FROM "2-10866704-9" WHERE "Stadium" = '11,682 excl. exhibition match';

Question: What round has an attendance of 12,127?
SQL: SELECT "Round" FROM "2-10866704-9" WHERE "Attendance" = '12,127';