Table: t_1950_vfl_match
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: Who was the away team when the VFL played at MCG?
SQL: SELECT "away_team" FROM t_1950_vfl_match WHERE "venue" = 'mcg'

Question: What was the crowd when the VFL played MCG?
SQL: SELECT MIN("crowd") FROM t_1950_vfl_match WHERE "venue" = 'mcg'

Question: What was the crowd when Melbourne was the home team?
SQL: SELECT AVG("crowd") FROM t_1950_vfl_match WHERE "home_team" = 'melbourne'