question: Did a Dutch film producer executive produce M1 , M2 , and M3 and produce a film
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.producer.films_executive_produced M2 .
  ?x0 ns:film.producer.films_executive_produced M3 .
  ?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
  ?x0 ns:people.person.nationality ns:m.059j2 .
  ?x1 a ns:film.film
  }