question: What film was edited by a actor and was directed by M1 and M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by M1 .
  ?x0 ns:film.film.directed_by M2 .
  ?x0 ns:film.film.edited_by ?x1 .
  ?x1 a ns:film.actor
  }