CREATE TABLE "round_13" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: Which Crowd has a Venue of princes park?
SQL: SELECT MIN("crowd") FROM "round_13" WHERE "venue"='princes park';

Question: Which Date has an Away team score of 16.13 (109)?
SQL: SELECT "date" FROM "round_13" WHERE "away_team_score"='16.13 (109)';

Question: Which Away team has a Venue of mcg?
SQL: SELECT "away_team" FROM "round_13" WHERE "venue"='mcg';

Question: Which average Crowd has a Home team of essendon?
SQL: SELECT AVG("crowd") FROM "round_13" WHERE "home_team"='essendon';