question: Which director of M7 was a Chinese art director of M1 , M2 , M3 , M4 , M5 , and M6
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.director.film M7 .
  ?x0 ns:film.film_art_director.films_art_directed M1 .
  ?x0 ns:film.film_art_director.films_art_directed M2 .
  ?x0 ns:film.film_art_director.films_art_directed M3 .
  ?x0 ns:film.film_art_director.films_art_directed 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.0d05w3
  }