question: What did M1 's employer acquire and M0 acquire
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x1 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M0 .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person M1
  }