question: Was M2 directed by M3 and M4 , edited by a Japanese art director , and directed by M5 and M6
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_art_director .
  ?x0 ns:people.person.nationality ns:m.03_3d .
  M2 ns:film.film.directed_by M3 .
  M2 ns:film.film.directed_by M4 .
  M2 ns:film.film.directed_by M5 .
  M2 ns:film.film.directed_by M6 .
  M2 ns:film.film.edited_by ?x0
  }