question: What star of M1 , M2 , M3 , and M4 was a Japanese art director of M5 and M6
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.film M1 .
  ?x0 ns:film.actor.film/ns:film.performance.film M2 .
  ?x0 ns:film.actor.film/ns:film.performance.film M3 .
  ?x0 ns:film.actor.film/ns:film.performance.film M4 .
  ?x0 ns:film.film_art_director.films_art_directed M5 .
  ?x0 ns:film.film_art_director.films_art_directed M6 .
  ?x0 ns:people.person.nationality ns:m.03_3d
  }