Question: Who is the mother of Pedro 1 Prince of Beira and when did they pass?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q939 p:P40 ?s . ?s ps:P40 wd:Q4765121 . ?s pq:P25 ?value1 . ?s pq:P570 ?value2 }