{"id":"S85002796","label":"Airplanes--Collision avoidance","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85002796","normalized_label":"airplanes--collision avoidance","broader":["http://id.loc.gov/authorities/subjects/sh85001353","http://id.loc.gov/authorities/subjects/sh85002704"],"aliases":["Airplane near-collision avoidance","Avoidance of airplane collisions","Avoidance of mid-air collisions","Collision avoidance in aeronautics","Mid-air collision avoidance"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85002796","provider":"lcsh","revision":"07ac190aa0c50df2","taxonomy_revision":"f050b5d4780b1289","title":"Airplanes--Collision avoidance","url":"/topics/S85002796","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9549887407889990144","address_version":"morton4x16-v1","coordinates":[0,20,17448,45056],"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}