Were M3 and M4 edited by a film director whose country of nationality employed M1 and employed M2
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:people.person.nationality ?x1 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
M3 ns:film.film.edited_by ?x0 .
M4 ns:film.film.edited_by ?x0
}