Which away team score also had a home team score of 20.20 (140)?
CREATE TABLE "round_19" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);
SELECT "away_team_score" FROM "round_19" WHERE "home_team_score"='20.20 (140)';