Was M3 edited by M1 's Canadian employee and edited by M0 's editor
SELECT count(*) WHERE {
?x0 ns:film.editor.film M0 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x1 ns:people.person.nationality ns:m.0d060g .
M3 ns:film.film.edited_by ?x0 .
M3 ns:film.film.edited_by ?x1
}