question: Did M2 produce a film , executive produce M0 's sequel , and write M3 and M4
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.prequel M0 .
  ?x1 a ns:film.film .
  M2 ns:film.producer.films_executive_produced ?x0 .
  M2 ns:film.producer.film|ns:film.production_company.films ?x1 .
  M2 ns:film.writer.film M3 .
  M2 ns:film.writer.film M4
  }