{"id":"S85002968","label":"Airport control towers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85002968","normalized_label":"airport control towers","broader":["http://id.loc.gov/authorities/subjects/sh85002963","http://id.loc.gov/authorities/subjects/sh85136296"],"aliases":["Airport towers","Airport traffic control towers","Airports--Control towers","Control towers (Airports)","Traffic control towers (Airports)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85002968","provider":"lcsh","revision":"af115b0c20691228","taxonomy_revision":"f050b5d4780b1289","title":"Airport control towers","url":"/topics/S85002968","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"900724323524952644","address_version":"morton4x16-v1","coordinates":[0,20,17451,24576],"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}