question: Were M2 and M5 executive produced by a Swedish film producer and executive produced by M3 and M4
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:people.person.nationality ns:m.0d0vqn .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.executive_produced_by M3 .
  M2 ns:film.film.executive_produced_by M4 .
  M5 ns:film.film.executive_produced_by ?x0 .
  M5 ns:film.film.executive_produced_by M3 .
  M5 ns:film.film.executive_produced_by M4
  }