Was M1 's art director and cinematographer a film editor that edited a film
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:film.cinematographer.film M1 .
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.film_art_director.films_art_directed M1 .
?x1 a ns:film.film
}