Question: When did john Steinbeck (he has a spouse called Gwyn Conger) reach his end time?
Paraphrase: When did John Steinback, whose spouse was Gwyn Conger, die?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q39212 p:P26 ?s . ?s ps:P26 wd:Q22273839 . ?s pq:P582 ?value}