Table: t_1950_vfl_football_game
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: Who was the home team for the game where North Melbourne was the away team?
SQL: SELECT "home_team" FROM t_1950_vfl_football_game WHERE "away_team" = 'north melbourne'

Question: When was the game where the away team had a score of 13.8 (86)?
SQL: SELECT "date" FROM t_1950_vfl_football_game WHERE "away_team_score" = '13.8 (86)'