Was a male editor of M2 's sequel M1 's art director
SELECT count(*) WHERE {
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.film_art_director.films_art_directed M1 .
?x0 ns:people.person.gender ns:m.05zppz .
?x1 ns:film.film.prequel M2
}