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