Did a film editor 's employer employ M0 's art director
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
?x1 ns:film.film_art_director.films_art_directed M0 .
?x2 a ns:film.editor
}