Was a costume designer of M0 and M1 a actor 's child
SELECT count(*) WHERE {
?x0 ns:film.film_costumer_designer.costume_design_for_film M0 .
?x0 ns:film.film_costumer_designer.costume_design_for_film M1 .
?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
?x1 a ns:film.actor
}