question: Did M6 's star write M0 , M1 , M2 , and M3 , executive produce M4 , and executive produce M5
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.film M6 .
  ?x0 ns:film.producer.films_executive_produced M4 .
  ?x0 ns:film.producer.films_executive_produced M5 .
  ?x0 ns:film.writer.film M0 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:film.writer.film M2 .
  ?x0 ns:film.writer.film M3
  }