Did M2 employ a Swedish art director and employ M3
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:people.person.nationality ns:m.0d0vqn .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M3
}