question: Was M2 directed by M3 and edited by a director and art director of M0 and M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film M0 .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.film_art_director.films_art_directed M0 .
  ?x0 ns:film.film_art_director.films_art_directed M1 .
  M2 ns:film.film.directed_by M3 .
  M2 ns:film.film.edited_by ?x0
  }