Did M2 and M4 found a actor 's employer , found M3 , and found M0 's employer
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
?x2 a ns:film.actor .
M2 ns:organization.organization_founder.organizations_founded ?x0 .
M2 ns:organization.organization_founder.organizations_founded ?x1 .
M2 ns:organization.organization_founder.organizations_founded M3 .
M4 ns:organization.organization_founder.organizations_founded ?x0 .
M4 ns:organization.organization_founder.organizations_founded ?x1 .
M4 ns:organization.organization_founder.organizations_founded M3
}