Question: What is the date of death of Ngô Đình Lệ Thủy's mother?
Sentence (from "Madame Nhu"): Trần Lệ Xuân (22 August 1924 – 24 April 2011), more popularly known in English as Madame Nhu, was the "de facto" First Lady of South Vietnam from 1955 to 1963.
Relevant evidence: Yes