Question: How long were Charles Boyer and Pat Paterson married?
Paraphrase: Charles Boyer and Pat Paterson were married for how long?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q105987 p:P26 ?s . ?s ps:P26 wd:Q3368580 . ?s pq:P582 ?value1 . ?s pq:P580 ?value2 }