question: Were M2 and M3 written by and executive produced by a film director that M1 was written and executive produced by
query: SELECT count(*) WHERE {
  ?x0 a ns:film.director .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.writer.film M1 .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.written_by ?x0 .
  M3 ns:film.film.executive_produced_by ?x0 .
  M3 ns:film.film.written_by ?x0
  }