What film editor that M1 starred and M2 starred wrote a film
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.editor .
?x0 ns:film.actor.film/ns:film.performance.film M1 .
?x0 ns:film.actor.film/ns:film.performance.film M2 .
?x0 ns:film.writer.film ?x1 .
?x1 a ns:film.film
}