When the venue was kardinia park and the Crowd was larger than 16,437, what was the Away team score?
CREATE TABLE "round_6" (
  "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_6" WHERE "crowd">'16,437' AND "venue"='kardinia park';