Was a prequel of M0 written by and directed by M1 's producer , executive producer , 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.producer.films_executive_produced M1 .
?x1 ns:film.producer.film|ns:film.production_company.films M1
}