What Canadian actor of M3 , M4 , M5 , and M6 was employed by M0 and M1
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.actor.film/ns:film.performance.character M3 .
?x0 ns:film.actor.film/ns:film.performance.character M4 .
?x0 ns:film.actor.film/ns:film.performance.character M5 .
?x0 ns:film.actor.film/ns:film.performance.character M6 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x0 ns:people.person.nationality ns:m.0d060g
}