Was a person that distributed M2 and M3 M0
SELECT count(*) WHERE {
M0 a ns:people.person .
M0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M2 .
M0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M3
}