{"id":"S85115510","label":"Rotors (Helicopters)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85115510","normalized_label":"rotors (helicopters)","broader":["http://id.loc.gov/authorities/subjects/sh85001301","http://id.loc.gov/authorities/subjects/sh85060007"],"aliases":["Helicopter rotors","Helicopters--Rotors","Rotating aerofoils","Rotating wings"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85115510","provider":"lcsh","revision":"a7ff47bdb1b1072b","taxonomy_revision":"f050b5d4780b1289","title":"Rotors (Helicopters)","url":"/topics/S85115510","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10090526363414053380","address_version":"morton4x16-v1","coordinates":[0,20,19209,55296],"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}