Question: Which hometown of pavel Moroz is also the palace of birthplace of Helena of Moscow ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Pavel_Moroz> <http://dbpedia.org/property/hometown> ?uri. <http://dbpedia.org/resource/Helena_of_Moscow> <http://dbpedia.org/ontology/birthPlace> ?uri}