question: Did a employer of M0 and M1 acquire a company
query: SELECT count(*) WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x1 .
  ?x1 a ns:business.employer
  }