{"id":"S85002695","label":"Air raid warning systems","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85002695","normalized_label":"air raid warning systems","broader":["http://id.loc.gov/authorities/subjects/sh85002625","http://id.loc.gov/authorities/subjects/sh85026329","http://id.loc.gov/authorities/subjects/sh85122972"],"aliases":["Air raid alerts","Air raid sirens","Aircraft warning systems","Attack warning systems","Warning systems, Air raid"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85002695","provider":"lcsh","revision":"2353396ceda319c7","taxonomy_revision":"f050b5d4780b1289","title":"Air raid warning systems","url":"/topics/S85002695","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290636107597612612","address_version":"morton4x16-v1","coordinates":[0,20,17447,7168],"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}