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