What did M1 direct , M0 edit , and a star of M2 edit
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.directed_by M1 .
?x0 ns:film.film.edited_by ?x1 .
?x0 ns:film.film.edited_by M0 .
?x1 ns:film.actor.film/ns:film.performance.film M2
}