question: Who was a director , art director , cinematographer , writer , and editor of M1 and M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.cinematographer.film M1 .
  ?x0 ns:film.cinematographer.film M2 .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.film_art_director.films_art_directed M1 .
  ?x0 ns:film.film_art_director.films_art_directed M2 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:film.writer.film M2
  }