question: Were M1 and M4 produced by a film 's writer and editor , directed by M3 , and edited by M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film ?x1 .
  ?x0 ns:film.writer.film ?x1 .
  ?x1 a ns:film.film .
  M1 ns:film.film.directed_by M3 .
  M1 ns:film.film.edited_by M2 .
  M1 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M4 ns:film.film.directed_by M3 .
  M4 ns:film.film.edited_by M2 .
  M4 ns:film.film.produced_by|ns:film.film.production_companies ?x0
  }