question: Was M1 a film 's Mexican French director
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  M1 ns:film.director.film ?x0 .
  M1 ns:people.person.nationality ns:m.0b90_r .
  M1 ns:people.person.nationality ns:m.0f8l9c
  }