CREATE TABLE "round_7" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: What was the lowest attendance when Fitzroy was the home team?
SQL: SELECT MIN("crowd") FROM "round_7" WHERE "home_team"='fitzroy';