Was a female parent of a writer and executive producer of M0 's prequel M1
SELECT count(*) WHERE {
?x0 ns:film.producer.films_executive_produced ?x1 .
?x0 ns:film.writer.film ?x1 .
?x1 ns:film.film.sequel M0 .
M1 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x0 .
M1 ns:people.person.gender ns:m.02zsn
}