Question: Who were John Steinbeck's spouses and when did each of them die?
Paraphrase: Who were John Steinbeck's life partners and when did each of them die?
SPARQL (Wikidata): SELECT ?value1 ?obj WHERE { wd:Q39212 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P582 ?value1 . }