Was M3 employed by a production company and employed by a Canadian cinematographer 's employer
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x1 a ns:film.cinematographer .
?x1 ns:people.person.nationality ns:m.0d060g .
?x2 a ns:film.production_company .
M3 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M3 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2
}