Question: On what date did Fitzroy have a home team score of 8.13 (61)?
SQL: SELECT "Date" FROM "2-10789881-9" WHERE "Home team score" = '8.13 (61)';

Question: What is the average crowd for the home team of North Melbourne?
SQL: SELECT AVG("Crowd") FROM "2-10789881-9" WHERE "Home team" = 'North Melbourne';