question: Were M2 and M5 edited by a film producer , written by M3 and M4 , and edited by a person
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x1 a ns:people.person .
  M2 ns:film.film.edited_by ?x0 .
  M2 ns:film.film.edited_by ?x1 .
  M2 ns:film.film.written_by M3 .
  M2 ns:film.film.written_by M4 .
  M5 ns:film.film.edited_by ?x0 .
  M5 ns:film.film.edited_by ?x1 .
  M5 ns:film.film.written_by M3 .
  M5 ns:film.film.written_by M4
  }