question: Which person that executive produced M1 , M2 , and M3 was a Swedish executive producer of M4 , M5 , M6 , and M7
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?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.films_executive_produced M4 .
  ?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:people.person.nationality ns:m.0d0vqn
  }