CREATE TABLE "round_12" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: What was the average size of the crowd for matches held at Corio Oval?
SQL: SELECT AVG("crowd") FROM "round_12" WHERE "venue"='corio oval';

Question: For the match with an away team score of 16.21 (117), what was the home team score?
SQL: SELECT "home_team_score" FROM "round_12" WHERE "away_team_score"='16.21 (117)';

Question: For the match with a home team score of 11.14 (80), what was the venue?
SQL: SELECT "venue" FROM "round_12" WHERE "home_team_score"='11.14 (80)';