Question: Who did Joan Rivers marry on January 1, 1955?
Paraphrase: On New Year's Day 1955, who did Joan Rivers marry?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q240933 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1955')) }