Did M2 and M3 write a film whose editor distributed M1
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.edited_by ?x1 .
?x1 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M1 .
M2 ns:film.writer.film ?x0 .
M3 ns:film.writer.film ?x0
}