Which art director wrote a film directed by and written by M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:film.writer.film ?x1 .
?x1 a ns:film.film .
?x1 ns:film.film.directed_by M2 .
?x1 ns:film.film.written_by M2
}