Question: Who was Steven Seagal's spouse on September 5, 1987?
Paraphrase: Who was Steven Seagal married to on September 5th, 1987?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q82110 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1987')) }