Question: Where did the aristocrats die whose mother was Maria Ludwika Krasiska?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/mother> <http://dbpedia.org/resource/Maria_Ludwika_Krasińska> . ?x <http://dbpedia.org/property/deathPlace> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Royalty>}