question: Was M1 acquired by M0 's parent
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child M0 .
  M1 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x0
  }