Did M2 and M4 acquire a employer of M0 and M1 and acquire M3
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 .
M2 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x0 .
M2 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M3 .
M4 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x0 .
M4 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M3
}