Was a film 's star , editor , and art director M0 's editor
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film ?x1 .
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.editor.film M0 .
?x0 ns:film.film_art_director.films_art_directed ?x1 .
?x1 a ns:film.film
}