Question: When was Khải Định's father born?
Sentence (from "Đồng Khánh"): Đồng Khánh (lit. "collective celebration"; 19 February 1864 – 28 January 1889), born Nguyễn Phúc Ưng Kỷ (阮福膺祺) or Nguyễn Phúc Ưng Đường (阮福膺禟), also known as Chánh Mông (正蒙), was the ninth emperor of the Nguyễn Dynasty of Vietnam.
Relevant evidence: Yes