Question: When did the mother of Charlemagne, grandmother of Charles the Younger die?
Paraphrase: On what date did the mother of Charlemagne, grandmother of Charles the Younger die?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q3044 p:P40 ?s . ?s ps:P40 wd:Q283107 . ?s pq:P570 ?value1 . ?s pq:P25 ?value2 }