Question: Whose relatives are Clan McDuck and Huey, Dewey, and Louie?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/property/relatives> <http://dbpedia.org/resource/Clan_McDuck> . ?uri <http://dbpedia.org/property/relatives> <http://dbpedia.org/resource/Huey,_Dewey,_and_Louie> . }