question: Was M1 edited by M3 , directed by a screenwriter , written by M2 , and directed by M4
query: SELECT count(*) WHERE {
  ?x0 a ns:film.writer .
  M1 ns:film.film.directed_by ?x0 .
  M1 ns:film.film.directed_by M4 .
  M1 ns:film.film.edited_by M3 .
  M1 ns:film.film.written_by M2
  }