Who did M1 employ and a art director 's country of nationality employ
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x1 ^ns:people.person.nationality ?x2 .
?x2 a ns:film.film_art_director
}