{"thcode":3,"term":{"code":578,"name":"isthmuses","parent":816,"scope":"Narrow sections of land in a body of water connecting two larger land areas. [USGS Feature Class Definitions <http:\/\/geonames.usgs.gov\/domestic\/feature_class.htm>]"},"uf":[],"bt":[{"code":816,"name":"physiographic features","parent":1,"scope":null},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[]}