Question: Who are the relatives of the character after which Quagmire's Quagmire was made?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/subsequentWork> <http://dbpedia.org/resource/Quagmire's_Quagmire> . ?uri <http://dbpedia.org/ontology/relative> ?x  . }