{"id":"S85145480","label":"Water--Purification--Biological treatment","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85145480","normalized_label":"water--purification--biological treatment","broader":["http://id.loc.gov/authorities/subjects/sh89005627"],"aliases":["Water--Biological treatment"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85145480","provider":"lcsh","revision":"1720dd86d2381fe7","taxonomy_revision":"f050b5d4780b1289","title":"Water--Purification--Biological treatment","url":"/topics/S85145480","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"324333941102626368","address_version":"morton4x16-v1","coordinates":[0,20,19678,8192],"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}