question: Was M3 edited by M1 's Canadian cinematographer and edited by M2 's actor
query: SELECT count(*) WHERE {
  ?x0 ns:film.cinematographer.film M1 .
  ?x0 ns:people.person.nationality ns:m.0d060g .
  ?x1 ns:film.actor.film/ns:film.performance.character M2 .
  M3 ns:film.film.edited_by ?x0 .
  M3 ns:film.film.edited_by ?x1
  }