Table: t_1948_vfl_game
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: Which away team's Venue is western oval?
SQL: SELECT "away_team" FROM t_1948_vfl_game WHERE "venue" = 'western oval'

Question: What date did the Home team score 11.21 (87)?
SQL: SELECT "date" FROM t_1948_vfl_game WHERE "home_team_score" = '11.21 (87)'