Were M2 and M5 employed by a Canadian film producer 's employer and employed by M3 and M4
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x1 a ns:film.producer .
?x1 ns:people.person.nationality ns:m.0d060g .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
M5 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M5 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
M5 ns:people.person.employment_history/ns:business.employment_tenure.company M4
}