Was a French director of M2 M1 's art director and editor
SELECT count(*) WHERE {
?x0 ns:film.director.film M2 .
?x0 ns:film.editor.film M1 .
?x0 ns:film.film_art_director.films_art_directed M1 .
?x0 ns:people.person.nationality ns:m.0f8l9c
}