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