question: What was edited by and written by a person that M1 was written by and was directed by
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.edited_by ?x1 .
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 a ns:people.person .
  ?x1 ns:film.director.film M1 .
  ?x1 ns:film.writer.film M1
  }