{"id":"S85002589","label":"Air--Purification","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85002589","normalized_label":"air--purification","broader":["http://id.loc.gov/authorities/subjects/sh85002688","http://id.loc.gov/authorities/subjects/sh85038429"],"aliases":["Purification of air"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85002589","provider":"lcsh","revision":"0de5c780b84cb79e","taxonomy_revision":"f050b5d4780b1289","title":"Air--Purification","url":"/topics/S85002589","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"902984919431644676","address_version":"morton4x16-v1","coordinates":[0,20,17445,29696],"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}