question: Were M1 and M4 executive produced by a film 's sequel 's producer and writer and edited by M2 and M3
query: SELECT count(*) WHERE {
  ?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
  ?x0 ns:film.writer.film ?x1 .
  ?x1 ns:film.film.prequel ?x2 .
  ?x2 a ns:film.film .
  M1 ns:film.film.edited_by M2 .
  M1 ns:film.film.edited_by M3 .
  M1 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.edited_by M2 .
  M4 ns:film.film.edited_by M3 .
  M4 ns:film.film.executive_produced_by ?x0
  }