Who was a art director that M2 and M3 were written by and were edited by
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.film_art_director .
?x0 a ns:people.person .
?x0 ns:film.editor.film M2 .
?x0 ns:film.editor.film M3 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3
}