Question: What is the date of death of Nguyễn Phúc Cảnh's father?
Sentence (from "Nguyễn Phúc Cảnh"): Although Prince Cảnh was the legitimate heir to the throne, he died before his father, and none of his descendants ascended the throne after his half-brother Nguyễn Phúc Đảm was chosen by Gia Long.
Relevant evidence: No