{"id":"S85145481","label":"Water--Purification--Chlorination","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85145481","normalized_label":"water--purification--chlorination","broader":["http://id.loc.gov/authorities/subjects/sh93001160"],"aliases":["Chlorination of water","Water chlorination","Water--Chlorination"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85145481","provider":"lcsh","revision":"5f71b79d16906400","taxonomy_revision":"f050b5d4780b1289","title":"Water--Purification--Chlorination","url":"/topics/S85145481","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"324342737195648576","address_version":"morton4x16-v1","coordinates":[0,20,19678,9216],"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}