Did M3 employ M4 , employ M5 , and employ a Canadian cinematographer that M1 was edited by
SELECT count(*) WHERE {
?x0 a ns:film.cinematographer .
?x0 ns:film.editor.film M1 .
?x0 ns:people.person.nationality ns:m.0d060g .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person M5
}