Was M2 edited by M3 , M4 , M5 , and M6 and produced by a art director that M1 starred
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:film.actor.film/ns:film.performance.film M1 .
M2 ns:film.film.edited_by M3 .
M2 ns:film.film.edited_by M4 .
M2 ns:film.film.edited_by M5 .
M2 ns:film.film.edited_by M6 .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}