Was a prequel of M0 directed by and written by M1 's editor and director
SELECT count(*) WHERE {
?x0 ns:film.film.directed_by ?x1 .
?x0 ns:film.film.sequel M0 .
?x0 ns:film.film.written_by ?x1 .
?x1 ns:film.director.film M1 .
?x1 ns:film.editor.film M1
}