We currently get the name of the country a city or state is in by parsing through the countries entry of the CLIFF focus results, matching on the field countryGeoNameId. In some cases, a city might be a focus of an article even though the country is not, in which case this procedure fails to return a name.
Better approaches could be to use the GeoNames API (http://www.geonames.org/) or to parse through the mentions rather than the CLIFF focus results. Note that the latter approach will require a way to determine if a CLIFF entry is a country, as all cities/ states within that country will have the same countryGeoNameId tag.
(We also have this problem when finding the name corresponding to a stateGeoNameId).
We currently get the name of the country a city or state is in by parsing through the countries entry of the CLIFF focus results, matching on the field countryGeoNameId. In some cases, a city might be a focus of an article even though the country is not, in which case this procedure fails to return a name.
Better approaches could be to use the GeoNames API (http://www.geonames.org/) or to parse through the mentions rather than the CLIFF focus results. Note that the latter approach will require a way to determine if a CLIFF entry is a country, as all cities/ states within that country will have the same countryGeoNameId tag.
(We also have this problem when finding the name corresponding to a stateGeoNameId).