Question: Whose relatives are Uncle Henry (Oz) and Aunt Em?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/ontology/relative> <http://dbpedia.org/resource/Uncle_Henry_(Oz)> . ?uri <http://dbpedia.org/ontology/relative> <http://dbpedia.org/resource/Aunt_Em> . }