Question: What is the date of death of Sarah Kubitschek's husband?
Sentence (from "Sarah Kubitschek"): Sarah Luísa Lemos Kubitschek de Oliveira , known as Dona Sarah Kubitschek (October 5, 1908 – February 4, 1996) was a Brazilian charity worker and First Lady of Brazil from 1956 to 1961, wife of President Juscelino Kubitschek.
Relevant evidence: Yes