question: Was M1 's sequel edited by a film editor and executive produced by M0
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.edited_by ?x1 .
  ?x0 ns:film.film.executive_produced_by M0 .
  ?x0 ns:film.film.prequel M1 .
  ?x1 a ns:film.editor
  }