question: Which film distributor was acquired by M1 and acquired by M2 's child
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film_distributor .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x1 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M1 .
  ?x1 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent M2
  }