Was M0 's prequel directed by a executive producer of M1 and M2
SELECT count(*) WHERE {
?x0 ns:film.film.directed_by ?x1 .
?x0 ns:film.film.sequel M0 .
?x1 ns:film.producer.films_executive_produced M1 .
?x1 ns:film.producer.films_executive_produced M2
}