question: Were M1 and M2 written by , directed by , edited by , and executive produced by a editor of a film
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film ?x1 .
  ?x1 a ns:film.film .
  M1 ns:film.film.directed_by ?x0 .
  M1 ns:film.film.edited_by ?x0 .
  M1 ns:film.film.executive_produced_by ?x0 .
  M1 ns:film.film.written_by ?x0 .
  M2 ns:film.film.directed_by ?x0 .
  M2 ns:film.film.edited_by ?x0 .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.written_by ?x0
  }