question: Did M1 star M0 's sequel 's writer and editor , star M2 , and star M3 and M4
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film ?x1 .
  ?x0 ns:film.writer.film ?x1 .
  ?x1 ns:film.film.prequel M0 .
  M1 ns:film.film.starring/ns:film.performance.actor ?x0 .
  M1 ns:film.film.starring/ns:film.performance.actor M2 .
  M1 ns:film.film.starring/ns:film.performance.actor M3 .
  M1 ns:film.film.starring/ns:film.performance.actor M4
  }