What is the title of the episode with a production code of K1504?
CREATE TABLE "season_3_1996_1997" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "directed_by" text,
  "original_air_date" text,
  "production_code" text
);
SELECT "title" FROM "season_3_1996_1997" WHERE "production_code"='k1504';