Who wrote the story viewed by 0.53 million viewers?
CREATE TABLE "table1_26914076_3" (
  "no" real,
  "num" real,
  "title" text,
  "directed_by" text,
  "story_by" text,
  "teleplay_by" text,
  "original_air_date" text,
  "u_s_viewers_millions" text
);
SELECT "story_by" FROM "table1_26914076_3" WHERE "u_s_viewers_millions"='0.53';