question: Were M2 and M4 edited by a actor that M1 was written by and executive produced by and edited by M3
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.writer.film M1 .
  M2 ns:film.film.edited_by ?x0 .
  M2 ns:film.film.edited_by M3 .
  M4 ns:film.film.edited_by ?x0 .
  M4 ns:film.film.edited_by M3
  }