What film distributor that distributed a film did M1 found
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.film_distributor .
?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film ?x1 .
?x0 ns:organization.organization.founders M1 .
?x1 a ns:film.film
}