Question: Which parties have their members live in the PM House, Colombo?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x prop:residence <http://dbpedia.org/resource/Prime_Minister's_House_(Colombo)> . ?uri onto:leader ?x  . ?uri rdf:type onto:PoliticalParty}