Were M2 , M4 , and M5 written by a production company 's Canadian employee and written by M3
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.nationality ns:m.0d060g .
?x1 a ns:film.production_company .
M2 ns:film.film.written_by ?x0 .
M2 ns:film.film.written_by M3 .
M4 ns:film.film.written_by ?x0 .
M4 ns:film.film.written_by M3 .
M5 ns:film.film.written_by ?x0 .
M5 ns:film.film.written_by M3
}