Did M3 star a art director that M2 's employer employed and M1 was founded by
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:organization.organization_founder.organizations_founded M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
M3 ns:film.film.starring/ns:film.performance.actor ?x0
}