What was executive produced by M0 and M1 and executive produced by a Canadian person
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.executive_produced_by ?x1 .
?x0 ns:film.film.executive_produced_by M0 .
?x0 ns:film.film.executive_produced_by M1 .
?x1 a ns:people.person .
?x1 ns:people.person.nationality ns:m.0d060g
}