Table: vfl_1978_game_4
Columns: home_team
home_team_score
away_team
away_team_score
venue
crowd
date

Question: Who was the home team when the away team scored 14.21 (105)?
SQL: SELECT "home_team_score" FROM vfl_1978_game_4 WHERE "away_team_score" = '14.21 (105)'