Was a sequel of M1 distributed by M0 and produced by a film director
SELECT count(*) WHERE {
?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M0 .
?x0 ns:film.film.prequel M1 .
?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
?x1 a ns:film.director
}