question: Who was a Swedish screenwriter that M4 was directed by and M2 was written by
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.writer .
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:film.writer.film M2 .
  ?x0 ns:people.person.nationality ns:m.0d0vqn
  }