question: Did a Spanish person write M1 , M2 , M3 , and M4 and executive produce M5 , M6 , and M7
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.producer.films_executive_produced M5 .
  ?x0 ns:film.producer.films_executive_produced M6 .
  ?x0 ns:film.producer.films_executive_produced M7 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:film.writer.film M2 .
  ?x0 ns:film.writer.film M3 .
  ?x0 ns:film.writer.film M4 .
  ?x0 ns:people.person.nationality ns:m.06mkj
  }