Was M1 a company that was acquired by and acquired a company
SELECT count(*) WHERE {
?x0 a ns:business.employer .
M1 a ns:business.employer .
M1 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x0 .
M1 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x0
}