Here’s something about which I was wondering last night.
Suppose you are a pilot in a seaplane responding to a distress call from a ship in international waters. You are the first responder. You get there to find that the ship has sunk and the sole survivors are a woman and her new-born baby (which still has the cord attached). Just as the mother hands you the baby, sharks, attracted by the bodies from the shipwreck and the childbirth, tear her to pieces. The child is clearly slightly premature - the stress of the shipwreck brought on labour.
You will later find that the ship did have a passenger and crew list, but you cannot identify the mother from that list. Nor does genetic testing help. Your memory is insufficient to create a photofit.
What nationality is the child? Yours? The ship’s captain’s? That of the nation in which the ship was registered? Where you first land?