question: Were M2 and M3 directed by and edited by a film director that produced M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.director .
  ?x0 ns:film.producer.film|ns:film.production_company.films M1 .
  M2 ns:film.film.directed_by ?x0 .
  M2 ns:film.film.edited_by ?x0 .
  M3 ns:film.film.directed_by ?x0 .
  M3 ns:film.film.edited_by ?x0
  }