question: Was M2 directed by a writer , director , and editor of M0 and M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film M0 .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.editor.film M0 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.writer.film M0 .
  ?x0 ns:film.writer.film M1 .
  M2 ns:film.film.directed_by ?x0
  }