What was the largest attendance at the Telstra Dome, when the home team was the Western Bulldogs?
CREATE TABLE "round_21" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "ground" text,
  "crowd" real,
  "date" text,
  "report" text
);
SELECT MAX("crowd") FROM "round_21" WHERE "ground"='telstra dome' AND "home_team"='western bulldogs';