{"id":"S00002449","label":"Salt mines and mining, Prehistoric","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh00002449","normalized_label":"salt mines and mining, prehistoric","broader":[],"aliases":["Prehistoric salt mines and mining"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh00002449","provider":"lcsh","revision":"365b53b36948dfa3","taxonomy_revision":"f050b5d4780b1289","title":"Salt mines and mining, Prehistoric","url":"/topics/S00002449","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"576469548400641088","address_version":"morton4x16-v1","coordinates":[0,0,38,17408],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}