I want the cast for director of colbert clark and armand schaefer for burn 'em up barnes
CREATE TABLE "list_of_film_serials_by_studio" (
  "serial_title" text,
  "year" text,
  "chapters" text,
  "director" text,
  "cast" text
);
SELECT "cast" FROM "list_of_film_serials_by_studio" WHERE "director"='colbert clark and armand schaefer' AND "serial_title"='burn ''em up barnes';