What was the score when the record was 21-31-13?
CREATE TABLE "game_log" (
  "game" real,
  "date" text,
  "opponent" text,
  "score" text,
  "location" text,
  "attendance" real,
  "record" text,
  "points" real
);
SELECT "score" FROM "game_log" WHERE "record"='21-31-13';