{"id":"S2009010867","label":"Acid mine drainage--Purification","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2009010867","normalized_label":"acid mine drainage--purification","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2009010867","provider":"lcsh","revision":"4a379628bab25ba9","taxonomy_revision":"f050b5d4780b1289","title":"Acid mine drainage--Purification","url":"/topics/S2009010867","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14719113791753314912","address_version":"morton4x16-v1","coordinates":[0,478,64586,52224],"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}