Did M1 found M2 , M3 , and M4 and found M0 's art director 's employer
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x1 ns:film.film_art_director.films_art_directed M0 .
M1 ns:organization.organization_founder.organizations_founded ?x0 .
M1 ns:organization.organization_founder.organizations_founded M2 .
M1 ns:organization.organization_founder.organizations_founded M3 .
M1 ns:organization.organization_founder.organizations_founded M4
}