Question: Which person's successor is Samsu-iluna?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/successor> <http://dbpedia.org/resource/Samsu-iluna>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Person>}