Did a film distributor distribute M1 and M2
SELECT count(*) WHERE {
?x0 a ns:film.film_distributor .
?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M1 .
?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M2
}