machine_question: where is the organization that acquired the company Columbia headquarters located
question: Which company acquired the company located in the Columbia headquarters?
sparql: PREFIX ns: <http://rdf.freebase.com/ns/>
  SELECT DISTINCT ?x
  WHERE {
  FILTER (?x != ?c)
  FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
  ?c ns:organization.organization.companies_acquired ?k .
  ?k ns:business.acquisition.company_acquired ns:m.015_1q . 
  ?c ns:organization.organization.headquarters ?y .
  ?y ns:location.mailing_address.citytown ?x .
  }
  
webqsp_question: where is sony headquarters located