Did M4 employ a Swedish film director that M2 and M3 starred
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:film.actor.film/ns:film.performance.film M2 .
?x0 ns:film.actor.film/ns:film.performance.film M3 .
?x0 ns:people.person.nationality ns:m.0d0vqn .
M4 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}