Did a Canadian director and editor of M2 and M3 influence M0
SELECT count(*) WHERE {
?x0 ns:film.director.film M2 .
?x0 ns:film.director.film M3 .
?x0 ns:film.editor.film M2 .
?x0 ns:film.editor.film M3 .
?x0 ns:influence.influence_node.influenced M0 .
?x0 ns:people.person.nationality ns:m.0d060g
}