Was M0 a company that was acquired by M2 , acquired M3 , and acquired M4 and M5
SELECT count(*) WHERE {
M0 a ns:business.employer .
M0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M2 .
M0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M3 .
M0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M4 .
M0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M5
}