Was M1 's prequel 's art director employed by M0 's director 's employer
SELECT count(*) WHERE {
?x0 ns:film.film_art_director.films_art_directed ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
?x1 ns:film.film.sequel M1 .
?x2 ns:business.employer.employees/ns:business.employment_tenure.person ?x3 .
?x3 ns:film.director.film M0
}