What is the largest crowd with a Home team score of 9.17 (71)?
CREATE TABLE "round_11" (
  "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_11" WHERE "home_team_score"='9.17 (71)';