question: What film editor was a male German Canadian actor of M3 and M4
query: SELECT DISTINCT ?x0 WHERE {
  ?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:people.person.gender ns:m.05zppz .
  ?x0 ns:people.person.nationality ns:m.0345h .
  ?x0 ns:people.person.nationality ns:m.0d060g
  }