Question: When did Andrei Mironov and Yekaterina Gradova get married?
Paraphrase: When did Andrei Mironov and Yekaterina Gradova get hitched?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q469550 p:P26 ?s . ?s ps:P26 wd:Q4147409 . ?s pq:P580 ?value}