{"id":"S2002001701","label":"Sewage--Purification--Anaerobic treatment","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2002001701","normalized_label":"sewage--purification--anaerobic treatment","broader":["http://id.loc.gov/authorities/subjects/sh85120466","http://id.loc.gov/authorities/subjects/sh85120525"],"aliases":["Anaerobic digestion (Sewage purification)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2002001701","provider":"lcsh","revision":"49f182904392ed64","taxonomy_revision":"f050b5d4780b1289","title":"Sewage--Purification--Anaerobic treatment","url":"/topics/S2002001701","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9514988918052120066","address_version":"morton4x16-v1","coordinates":[0,477,20604,37888],"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}