What did a film distributor that distributed M1 and M2 write
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.written_by ?x1 .
?x1 a ns:film.film_distributor .
?x1 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M1 .
?x1 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M2
}