Empress Thừa Thiên had two sons with Gia Long : Nguyen Phuc Chieu ( who died after several days ) and Crown Prince Nguyễn Phúc Cảnh .
Head entity: nguyễn phúc cảnh Q5262077 23 24 25
Tail entity: gia long Q210417 7 8
Relation (head \u2192 tail): P22
Inverse relation (tail \u2192 head): P40