Table: t_1938_vfl_match_2
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: What was the score of the home team when they played carlton?
SQL: SELECT "home_team_score" FROM t_1938_vfl_match_2 WHERE "away_team" = 'carlton'

Question: How many points did the visiting team score at south melbourne?
SQL: SELECT "away_team_score" FROM t_1938_vfl_match_2 WHERE "home_team" = 'south melbourne'