An archive of open source “knowledge packages” and two packages mentioned therein. Another gazetteer like geonames package and another semantic wikipedia:

Knowledge pacjkages:

• CKAN – Comprehensive Knowledge Archive Network – Home

  CKAN is the Comprehensive Knowledge Archive Network, a registry of open knowledge packages and projects (and a few closed ones). CKAN is the place to search for open knowledge resources as well as register your own

  (tags: content opensource knowledge ckan)

• atarax.org/pycitiesinfo

  This module requires a directory containing a set of “CitiesInfo” files, that you can put anywhere on your system (default ‘/usr/local/share/citiesinfo’, but you can change this in the source file.)
  CitiesInfo files are sqlite databases

  (tags: software opensource python cities pyCitiesInfo)

• dbpedia.org – Using Wikipedia as a Web Database

  DBpedia.org is a community effort to extract structured information from Wikipedia
  and to make this information available on the Web. DBpedia allows you to ask
  sophisticated queries against Wikipedia and to link other datasets on the Web
  to Wikipedia data

  (tags: content opensource wikipedia dbpedia)