Question: Which royalty's spouse is Ptolemy XIV of Egypt?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE {?uri onto:spouse <http://dbpedia.org/resource/Ptolemy_XIV_of_Egypt>  . ?uri rdf:type onto:Royalty}