{"id":"S85137485","label":"Trickling filters","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85137485","normalized_label":"trickling filters","broader":["http://id.loc.gov/authorities/subjects/sh85048252"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85137485","provider":"lcsh","revision":"84d6869028d69c97","taxonomy_revision":"f050b5d4780b1289","title":"Trickling filters","url":"/topics/S85137485","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"326594535939506692","address_version":"morton4x16-v1","coordinates":[0,20,19553,13312],"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}