Was M0 a distributor of M1 , M2 , and M3
SELECT count(*) WHERE {
M0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M1 .
M0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M2 .
M0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M3
}