Did M4 and M6 acquire a employer of M0 , M1 , M2 , and M3 and acquire M5
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
M4 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x0 .
M4 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M5 .
M6 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x0 .
M6 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M5
}