question: What was written and directed by a Spanish director of M1 , M2 , M3 , and M4
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.directed_by ?x1 .
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 ns:film.director.film M1 .
  ?x1 ns:film.director.film M2 .
  ?x1 ns:film.director.film M3 .
  ?x1 ns:film.director.film M4 .
  ?x1 ns:people.person.nationality ns:m.06mkj
  }