Was a child of a art director of M0 , M1 , and M2 M3
SELECT count(*) WHERE {
?x0 ns:film.film_art_director.films_art_directed M0 .
?x0 ns:film.film_art_director.films_art_directed M1 .
?x0 ns:film.film_art_director.films_art_directed M2 .
M3 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x0
}