{"id":"S85020466","label":"Carrier control systems","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85020466","normalized_label":"carrier control systems","broader":["http://id.loc.gov/authorities/subjects/sh85010089","http://id.loc.gov/authorities/subjects/sh85086466"],"aliases":["A-C carrier control systems","Control systems, Carrier"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85020466","provider":"lcsh","revision":"d1062f8928c32882","taxonomy_revision":"f050b5d4780b1289","title":"Carrier control systems","url":"/topics/S85020466","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10088208318029252096","address_version":"morton4x16-v1","coordinates":[0,20,17724,51200],"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}