Question: What is the date of birth of the child of Louis IX of France named Blanche of France, Infanta of Castile and what is her date of death?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q346 p:P40 ?s . ?s ps:P40 wd:Q456900 . ?s pq:P569 ?value1 . ?s pq:P570 ?value2 }