Was a sequel of M0 produced by a actor and directed by M1
SELECT count(*) WHERE {
?x0 ns:film.film.directed_by M1 .
?x0 ns:film.film.prequel M0 .
?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
?x1 a ns:film.actor
}