question: Did a French art director edit M1 , write M2 , and direct M4
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_art_director .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.writer.film M2 .
  ?x0 ns:people.person.nationality ns:m.0f8l9c
  }