question: Was M2 executive produced by M3 , M4 , and M5 , executive produced by M6 , and edited by M1 's Mexican art director
query: SELECT count(*) WHERE {
  ?x0 ns:film.film_art_director.films_art_directed M1 .
  ?x0 ns:people.person.nationality ns:m.0b90_r .
  M2 ns:film.film.edited_by ?x0 .
  M2 ns:film.film.executive_produced_by M3 .
  M2 ns:film.film.executive_produced_by M4 .
  M2 ns:film.film.executive_produced_by M5 .
  M2 ns:film.film.executive_produced_by M6
  }