Which art director executive produced a film that M2 and M3 wrote and executive produced
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:film.producer.films_executive_produced ?x1 .
?x1 a ns:film.film .
?x1 ns:film.film.executive_produced_by M2 .
?x1 ns:film.film.executive_produced_by M3 .
?x1 ns:film.film.written_by M2 .
?x1 ns:film.film.written_by M3
}