Which film was written by a art director and starred M1 and M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.starring/ns:film.performance.actor M1 .
?x0 ns:film.film.starring/ns:film.performance.actor M2 .
?x0 ns:film.film.written_by ?x1 .
?x1 a ns:film.film_art_director
}