Who was the away team at the game where Footscray was the home team and the crowd was larger than 20,200?
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 "away_team" FROM "round_11" WHERE "crowd">'20,200' AND "home_team"='footscray';