{"id":"S85145641","label":"Water softening sludge","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85145641","normalized_label":"water softening sludge","broader":["http://id.loc.gov/authorities/subjects/sh85120516"],"aliases":["Sludge, Water softening"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85145641","provider":"lcsh","revision":"1181a594f44dec7a","taxonomy_revision":"f050b5d4780b1289","title":"Water softening sludge","url":"/topics/S85145641","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9547714774054339072","address_version":"morton4x16-v1","coordinates":[0,20,19680,41984],"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}