What was the average crowd size at a game when the away team scored 17.12 (114)?
CREATE TABLE "round_3" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);
SELECT AVG("crowd") FROM "round_3" WHERE "away_team_score"='17.12 (114)';