Question: When did Isabella I of Castile's child, Maria of Aragon, die?
Paraphrase: What's the date of death for the child of Isabella I of Castile?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q45859 p:P40 ?s . ?s ps:P40 wd:Q229816 . ?s pq:P570 ?value}