Was a company that a film was produced by and written by M1 's child
SELECT count(*) WHERE {
?x0 a ns:business.employer .
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x0 ns:film.writer.film ?x1 .
?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent M1 .
?x1 a ns:film.film
}