question: Was a film written by a costume designer and directed by M1 and M2
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by M1 .
  ?x0 ns:film.film.directed_by M2 .
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 a ns:film.film_costumer_designer
  }