What was the away team's score of at the game of telstra stadium?
CREATE TABLE "round_1" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "ground" text,
  "crowd" real,
  "date" text
);
SELECT "away_team_score" FROM "round_1" WHERE "ground"='Telstra Stadium';