Was a employer of M1 's director and art director M0 's child
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent M0 .
?x1 ns:film.director.film M1 .
?x1 ns:film.film_art_director.films_art_directed M1
}