Question: What is the date of death of Sarah Kubitschek's husband?
Sentence (from "Juscelino Kubitschek"): Juscelino Kubitschek de Oliveira (12 September 1902 – 22 August 1976), known also by his initials JK, was a prominent Brazilian politician who served as the 21st President of Brazil from 1956 to 1961.
Relevant evidence: Yes