{"id":"S2004004575","label":"Closed-circuit television in airplane landing","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2004004575","normalized_label":"closed-circuit television in airplane landing","broader":["http://id.loc.gov/authorities/subjects/sh85002834","http://id.loc.gov/authorities/subjects/sh85074368"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2004004575","provider":"lcsh","revision":"5fb16478da0b40c4","taxonomy_revision":"f050b5d4780b1289","title":"Closed-circuit television in airplane landing","url":"/topics/S2004004575","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"5514877931157348934","address_version":"morton4x16-v1","coordinates":[0,477,51899,31744],"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}