Question: Who is the fictional character whose relative is Vestigial Peter?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/relative> <http://dbpedia.org/resource/Vestigial_Peter>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/FictionalCharacter>}