{"id":"S85004932","label":"Anechoic chambers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85004932","normalized_label":"anechoic chambers","broader":["http://id.loc.gov/authorities/subjects/sh85042343","http://id.loc.gov/authorities/subjects/sh85101561","http://id.loc.gov/authorities/subjects/sh90000997"],"aliases":["Electromagnetic anechoic chambers","Radio anechoic chambers"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85004932","provider":"lcsh","revision":"9fab30c33ac2553f","taxonomy_revision":"f050b5d4780b1289","title":"Anechoic chambers","url":"/topics/S85004932","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290486574079164992","address_version":"morton4x16-v1","coordinates":[0,20,17482,4096],"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}