question: Who was a film producer that M2 was directed by , edited by , executive produced by , and written by
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.producer .
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.producer.films_executive_produced M2 .
  ?x0 ns:film.writer.film M2
  }