Did a art director 's employer employ M0 's art director and employ M1 's parent
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x3 .
?x1 ns:film.film_art_director.films_art_directed M0 .
?x2 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child M1 .
?x3 a ns:film.film_art_director
}