question: Was M3 edited by M4 , M5 , and M6 and edited by a Chinese film editor that M2 was directed by
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:people.person.nationality ns:m.0d05w3 .
  M3 ns:film.film.edited_by ?x0 .
  M3 ns:film.film.edited_by M4 .
  M3 ns:film.film.edited_by M5 .
  M3 ns:film.film.edited_by M6
  }