Question: Which allegiance of the John Kotelawala is also the  sovereign state of the Sanath Weerakoon ?
SPARQL:
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/John_Kotelawala> <http://dbpedia.org/property/allegiance> ?uri. <http://dbpedia.org/resource/Sanath_Weerakoon> <http://dbpedia.org/ontology/country> ?uri}