It's not that sophisticated. It's a picture of a baby being taken at a hospital.
There's probably hundreds of photos of babies being taken with GPS from that hosptial.
FB image recognition probably thinks all these babies are the same "person".
Then a separate system comes along and takes photos that do not have location info and tries to match them up with ones that do. It finds a match with the "hospital baby" and then asks for verification. Person says YES and it adds that baby to the "hospital baby" pool as well.
There's probably hundreds of photos of babies being taken with GPS from that hosptial.
FB image recognition probably thinks all these babies are the same "person".
Then a separate system comes along and takes photos that do not have location info and tries to match them up with ones that do. It finds a match with the "hospital baby" and then asks for verification. Person says YES and it adds that baby to the "hospital baby" pool as well.