Table: vfl_1980_game
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: Which Crowd has a Venue of princes park?
SQL: SELECT MIN("crowd") FROM vfl_1980_game WHERE "venue" = 'princes park'

Question: Which Date has an Away team score of 16.13 (109)?
SQL: SELECT "date" FROM vfl_1980_game WHERE "away_team_score" = '16.13 (109)'

Question: Which Away team has a Venue of mcg?
SQL: SELECT "away_team" FROM vfl_1980_game WHERE "venue" = 'mcg'

Question: Which average Crowd has a Home team of essendon?
SQL: SELECT AVG("crowd") FROM vfl_1980_game WHERE "home_team" = 'essendon'