Did M3 employ a British male art director
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:people.person.gender ns:m.05zppz .
?x0 ns:people.person.nationality ns:m.07ssc .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}