{"id":"S85001309","label":"Aeronautical instruments","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85001309","normalized_label":"aeronautical instruments","broader":["http://id.loc.gov/authorities/subjects/sh85042343"],"aliases":["Aeronautics--Instruments","Aircraft instruments","Airplanes--Instruments","Instruments, Aeronautical"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85001309","provider":"lcsh","revision":"c7b9a68201985dad","taxonomy_revision":"f050b5d4780b1289","title":"Aeronautical instruments","url":"/topics/S85001309","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"902984919427711492","address_version":"morton4x16-v1","coordinates":[0,20,17425,29696],"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}