Did M3 produce and distribute a film that M1 and M2 distributed
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M1 .
?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M2 .
M3 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film ?x0 .
M3 ns:film.producer.film|ns:film.production_company.films ?x0
}