Table: footscray_geelong_19800607
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: What's the crowd population of the home team located in Richmond?
SQL: SELECT SUM("crowd") FROM footscray_geelong_19800607 WHERE "home_team" = 'richmond'

Question: What is the visiting team that has a home team related to footscray?
SQL: SELECT "away_team" FROM footscray_geelong_19800607 WHERE "home_team" = 'footscray'