Question: What is the political party of the person succeeded by A.K. Singh?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/successor> <http://dbpedia.org/resource/A._K._Singh> . ?x <http://dbpedia.org/property/party> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Person>}