question: Did M1 and M5 executive produce M2 and M3 , executive produce a film 's sequel , and executive produce M4
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.prequel ?x1 .
  ?x1 a ns:film.film .
  M1 ns:film.producer.films_executive_produced ?x0 .
  M1 ns:film.producer.films_executive_produced M2 .
  M1 ns:film.producer.films_executive_produced M3 .
  M1 ns:film.producer.films_executive_produced M4 .
  M5 ns:film.producer.films_executive_produced ?x0 .
  M5 ns:film.producer.films_executive_produced M2 .
  M5 ns:film.producer.films_executive_produced M3 .
  M5 ns:film.producer.films_executive_produced M4
  }