Question: Which country has leaders  Karu Jayasuriya and Ranil Wickremesinghe?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?uri onto:leader <http://dbpedia.org/resource/Karu_Jayasuriya> . ?uri onto:leader <http://dbpedia.org/resource/Ranil_Wickremesinghe> . ?uri rdf:type onto:Country}