Question: What are the countries for which History of Trier principal to?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE {?uri onto:capital <http://dbpedia.org/resource/History_of_Trier> . ?uri rdf:type onto:Country}