Which university has affiliations to Graham Holdings and Kaplan, Inc.?
SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/property/affiliations> <http://dbpedia.org/resource/Graham_Holdings_Company> . ?uri <http://dbpedia.org/property/affiliations> <http://dbpedia.org/resource/Kaplan,_Inc.> . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/University>}
Graham_Holdings_Company Kaplan,_Inc.