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