question: Was M3 's sequel edited by a film director and written by M0 , M1 , and M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.edited_by ?x1 .
  ?x0 ns:film.film.prequel M3 .
  ?x0 ns:film.film.written_by M0 .
  ?x0 ns:film.film.written_by M1 .
  ?x0 ns:film.film.written_by M2 .
  ?x1 a ns:film.director
  }