Table: t_1934_vfl_game
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: What did the away team score when the home team scored 23.13 (151)?
SQL: SELECT "away_team_score" FROM t_1934_vfl_game WHERE "home_team_score" = '23.13 (151)'