question: Was M2 edited by a cinematographer and edited by a film 's art director
query: SELECT count(*) WHERE {
  ?x0 ns:film.film_art_director.films_art_directed ?x1 .
  ?x1 a ns:film.film .
  ?x2 a ns:film.cinematographer .
  M2 ns:film.film.edited_by ?x0 .
  M2 ns:film.film.edited_by ?x2
  }