Did M1 and M6 found M2 , M3 , M4 , and M5 and found a art director 's employer
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x1 a ns:film.film_art_director .
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 .
M1 ns:organization.organization_founder.organizations_founded M5 .
M6 ns:organization.organization_founder.organizations_founded ?x0 .
M6 ns:organization.organization_founder.organizations_founded M2 .
M6 ns:organization.organization_founder.organizations_founded M3 .
M6 ns:organization.organization_founder.organizations_founded M4 .
M6 ns:organization.organization_founder.organizations_founded M5
}