question: Were M2 and M3 produced by , directed by , written by , and edited by a film 's Mexican writer
query: SELECT count(*) WHERE {
  ?x0 ns:film.writer.film ?x1 .
  ?x0 ns:people.person.nationality ns:m.0b90_r .
  ?x1 a ns:film.film .
  M2 ns:film.film.directed_by ?x0 .
  M2 ns:film.film.edited_by ?x0 .
  M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M2 ns:film.film.written_by ?x0 .
  M3 ns:film.film.directed_by ?x0 .
  M3 ns:film.film.edited_by ?x0 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M3 ns:film.film.written_by ?x0
  }