Question: Where did Boleslaw Prus pass away? It is a sister city of Vilnius.
Paraphrase: Where did Prus pass away from Boleslaw? It's a Vilnius sister town.
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q144439 wdt:P20 ?answer . ?answer wdt:P190 wd:Q216}
Answer: Warsaw