Get all known Web IDs for in Freebase namespaces and from the Web
Get all the equivalent URIs for in Freebase namespaces and from the Web
Try: OL2669993A at OpenLibrary, 9690 at NCBI, gerald_rudolph_jr_ford at the New York Times,
id-6450 at TVRage, 221baa3f-7f79-4047-9a14-a6b49eacf6c0 at the BBC

Web IDs are world-wide "strong identifiers" that you and your software can use to precisely identify and distinguish concepts, even if they share the same names.

For example: "Jaguar" can be used to refer to several distinct concepts (the animal, the car company, the musical artist, etc.) but each of them have different Web IDs.

Whereas keywords are ambiguous, Web IDs are precise.