question: Was a editor of M1 and M2 a male art director of a prequel of M3
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.film_art_director.films_art_directed ?x1 .
  ?x0 ns:people.person.gender ns:m.05zppz .
  ?x1 ns:film.film.sequel M3
  }