Who was the director of Children of Earth of "day five"?
CREATE TABLE "episodes" (
  "children_of_earth" text,
  "run_time" text,
  "writer" text,
  "director" text,
  "original_airdate" text,
  "viewers_including_hd_in_millions" text
);
SELECT "director" FROM "episodes" WHERE "children_of_earth"='\"day five\"';