Table: footy_game_1981
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: What is the home teams score when north melbourne is the away team?
SQL: SELECT "home_team_score" FROM footy_game_1981 WHERE "away_team" = 'north melbourne'

Question: What is the highest crowd when fitzroy is the home team?
SQL: SELECT MAX("crowd") FROM footy_game_1981 WHERE "home_team" = 'fitzroy'

Question: What is the lowest crowd when essendon is the away team?
SQL: SELECT MIN("crowd") FROM footy_game_1981 WHERE "away_team" = 'essendon'

Question: On what date was essendon the away team?
SQL: SELECT "date" FROM footy_game_1981 WHERE "away_team" = 'essendon'