What was the largest crowd for a game where the away team scored 14.20 (104)?
CREATE TABLE "round_4" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);
SELECT MAX("crowd") FROM "round_4" WHERE "away_team_score"='14.20 (104)';