question: Was a Canadian cinematographer that M3 , M4 , and M5 were played by a film editor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 a ns:film.editor .
  ?x0 ns:film.actor.film/ns:film.performance.character M3 .
  ?x0 ns:film.actor.film/ns:film.performance.character M4 .
  ?x0 ns:film.actor.film/ns:film.performance.character M5 .
  ?x0 ns:people.person.nationality ns:m.0d060g
  }