{"id":"S85042738","label":"Emergency communication systems","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85042738","normalized_label":"emergency communication systems","broader":["http://id.loc.gov/authorities/subjects/sh85026326","http://id.loc.gov/authorities/subjects/sh85038299","http://id.loc.gov/authorities/subjects/sh85133301"],"aliases":["Emergency warning systems","Warning systems, Emergency"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85042738","provider":"lcsh","revision":"4852d9ade15cb134","taxonomy_revision":"f050b5d4780b1289","title":"Emergency communication systems","url":"/topics/S85042738","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10088208576796836352","address_version":"morton4x16-v1","coordinates":[0,20,18072,51200],"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}