What is Lowest Crowd, when Home Team is Brisbane Lions?
CREATE TABLE "group_a" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "ground" text,
  "crowd" real,
  "date" text
);
SELECT MIN("crowd") FROM "group_a" WHERE "home_team"='brisbane lions';