Question: Who is the spouse of Ted Kennedy at the time of 2009-1-1?
Paraphrase: At the time of 2009-1-1, who was the spouse of Ted Kennedy?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q134549 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'2009')) }