Question: Who was the mother of Pedro I's child Princess Francisca of Brazil and when was Princess Francisca born?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q939 p:P40 ?s . ?s ps:P40 wd:Q242159 . ?s pq:P25 ?value1 . ?s pq:P569 ?value2 }