Thanks! I can see how using Cosmogony can make sense if Who's on First is too complex but I'm afraid OSM doesn't have enough coverage of administrative boundari

Thanks! I can see how using Cosmogony can make sense if Who's on First is too complex but I'm afraid OSM doesn't have enough coverage of administrative boundaries. The boundaries are mostly not visible in the physical world and thus cannot be mapped in the traditional sense. I wonder if there's an open catalog of boundary data analogous to https://openaddresses.io/ https://openaddresses.io/