{"id":"S85120461","label":"Sewage--Purification","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85120461","normalized_label":"sewage--purification","broader":[],"aliases":["Effluent treatment","Purification of sewage","Sewage treatment","Sewage--Disinfection","Water treatment"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85120461","provider":"lcsh","revision":"c9988f5c17163ec1","taxonomy_revision":"f050b5d4780b1289","title":"Sewage--Purification","url":"/topics/S85120461","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"326590429946840644","address_version":"morton4x16-v1","coordinates":[0,20,19287,13312],"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}