question: Who was a French film director that M2 was directed by and M3 was directed by
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:people.person.nationality ns:m.0f8l9c
  }