Were M3 and M4 produced by a British Canadian actor
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?x0 ns:people.person.nationality ns:m.07ssc .
?x0 ns:people.person.nationality ns:m.0d060g .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M4 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}