question: What film did M1 's writer , director , and producer direct
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by ?x1 .
  ?x1 ns:film.director.film M1 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M1 .
  ?x1 ns:film.writer.film M1
  }