Question: When Joseph Freiherr von Eichendorff ended to be the spouse with Aloysia von Eichendorff?
Paraphrase: GIve the date Joseph Freiherr von Eichendorff and Aloysia von Eichendorff divorced.
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q77204 p:P26 ?s . ?s ps:P26 wd:Q15990518 . ?s pq:P582 ?value}