What is the name of the director of the episode written by robin schwartz & robert tarlow?
CREATE TABLE "episodes" (
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text
);
SELECT "directed_by" FROM "episodes" WHERE "written_by"='robin schwartz & robert tarlow';