question: Was a film 's editor a Swedish actor of M1 and M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character M1 .
  ?x0 ns:film.actor.film/ns:film.performance.character M2 .
  ?x0 ns:film.editor.film ?x1 .
  ?x0 ns:people.person.nationality ns:m.0d0vqn .
  ?x1 a ns:film.film
  }