question: What was written by a film editor , written by M0 , M1 , and M2 , and directed by a film producer
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.directed_by ?x1 .
  ?x0 ns:film.film.written_by ?x2 .
  ?x0 ns:film.film.written_by M0 .
  ?x0 ns:film.film.written_by M1 .
  ?x0 ns:film.film.written_by M2 .
  ?x1 a ns:film.producer .
  ?x2 a ns:film.editor
  }