Was M0 acquired by M1 and M2 , acquired by M3 and M4 , acquired by M5 , and acquired by M6
SELECT count(*) WHERE {
M0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M1 .
M0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M2 .
M0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M3 .
M0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M4 .
M0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M5 .
M0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M6
}