Did M1 star a art director and star M2 , M3 , and M4
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
M1 ns:film.film.starring/ns:film.performance.actor ?x0 .
M1 ns:film.film.starring/ns:film.performance.actor M2 .
M1 ns:film.film.starring/ns:film.performance.actor M3 .
M1 ns:film.film.starring/ns:film.performance.actor M4
}