To which party do the politicians who died in Delhi belong?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/placeOfDeath> <http://dbpedia.org/resource/Delhi> . ?x <http://dbpedia.org/property/party> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/OfficeHolder>}
Delhi