What employer of M0 acquired M1 , M2 , and M3 , acquired M4 , and acquired M5 and M6
SELECT DISTINCT ?x0 WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M1 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M2 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M3 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M4 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M5 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M6
}