{"id":"S85000576","label":"Acoustic filters","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85000576","normalized_label":"acoustic filters","broader":["http://id.loc.gov/authorities/subjects/sh85048252","http://id.loc.gov/authorities/subjects/sh85125364"],"aliases":["Filters, Acoustic","Sound filters"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85000576","provider":"lcsh","revision":"f68868ea146cd58d","taxonomy_revision":"f050b5d4780b1289","title":"Acoustic filters","url":"/topics/S85000576","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"288234774198355520","address_version":"morton4x16-v1","coordinates":[0,20,17414,0],"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}