question: Was M1 written by M2 and M3 and written by M0 's prequel 's producer , director , and cinematographer
query: SELECT count(*) WHERE {
  ?x0 ns:film.cinematographer.film ?x1 .
  ?x0 ns:film.director.film ?x1 .
  ?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
  ?x1 ns:film.film.sequel M0 .
  M1 ns:film.film.written_by ?x0 .
  M1 ns:film.film.written_by M2 .
  M1 ns:film.film.written_by M3
  }