When the crowd is larger than 12,314 and the home team score is 17.7 (109), what is the away team score?
CREATE TABLE "1st_round" (
  "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 "1st_round" WHERE "crowd">'12,314' AND "home_team_score"='17.7 (109)';