question: Was a film editor a art director that M2 and M3 were directed , written , and edited by
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x0 a ns:film.film_art_director .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.editor.film M3 .
  ?x0 ns:film.writer.film M2 .
  ?x0 ns:film.writer.film M3
  }