question: Were M3 and M4 directed and written by a Swedish screenwriter that wrote and directed M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.writer .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:people.person.nationality ns:m.0d0vqn .
  M3 ns:film.film.directed_by ?x0 .
  M3 ns:film.film.written_by ?x0 .
  M4 ns:film.film.directed_by ?x0 .
  M4 ns:film.film.written_by ?x0
  }