Did M1 , M2 , M3 , and M4 found M0 's employee 's employer
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
M1 ns:organization.organization_founder.organizations_founded ?x0 .
M2 ns:organization.organization_founder.organizations_founded ?x0 .
M3 ns:organization.organization_founder.organizations_founded ?x0 .
M4 ns:organization.organization_founder.organizations_founded ?x0
}