Which country of nationality of M0 was a film 's prequel 's director 's employer
SELECT DISTINCT ?x0 WHERE {
?x0 ^ns:people.person.nationality M0 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x1 ns:film.director.film ?x2 .
?x2 ns:film.film.sequel ?x3 .
?x3 a ns:film.film
}