Which film director that played M2 and M3 was M1 's star and editor
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.director .
?x0 ns:film.actor.film/ns:film.performance.character M2 .
?x0 ns:film.actor.film/ns:film.performance.character M3 .
?x0 ns:film.actor.film/ns:film.performance.film M1 .
?x0 ns:film.editor.film M1
}