{"id":"S2005008470","label":"Aircraft separation","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2005008470","normalized_label":"aircraft separation","broader":["http://id.loc.gov/authorities/subjects/sh85002796"],"aliases":["Aircraft approach spacing","Airplanes--Separation","Airplanes--Spacing","Approach spacing, Aircraft","Separation of aircraft","Spacing of aircraft"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2005008470","provider":"lcsh","revision":"ae9b3ae11119dc08","taxonomy_revision":"f050b5d4780b1289","title":"Aircraft separation","url":"/topics/S2005008470","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"578923667510141476","address_version":"morton4x16-v1","coordinates":[0,478,2049,22528],"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}