Was M0 's art director employed by a company and employed by a producer of M1
SELECT count(*) WHERE {
?x0 ns:film.film_art_director.films_art_directed M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
?x1 ns:film.producer.film|ns:film.production_company.films M1 .
?x2 a ns:business.employer
}