Was a person whose employer distributed M2 and M3 a art director
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 a ns:people.person .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M2 .
?x1 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M3
}