CREATE TABLE "round_11" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: How large was the crowd at Carlton's home game?
SQL: SELECT COUNT("crowd") FROM "round_11" WHERE "home_team"='carlton';

Question: On what date did the away team score 12.9 (81)?
SQL: SELECT "date" FROM "round_11" WHERE "away_team_score"='12.9 (81)';