question: Was a film editor that M3 was written by , M0 's sequel starred , and M4 was written by M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.prequel M0 .
  M1 a ns:film.editor .
  M1 ns:film.actor.film/ns:film.performance.film ?x0 .
  M1 ns:film.writer.film M3 .
  M1 ns:film.writer.film M4
  }