question: Did M2 's prequel 's director , executive producer , and writer edit M0 and M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film ?x1 .
  ?x0 ns:film.editor.film M0 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.producer.films_executive_produced ?x1 .
  ?x0 ns:film.writer.film ?x1 .
  ?x1 ns:film.film.sequel M2
  }