{"id":"S85002894","label":"Airplanes--Rocket engines","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85002894","normalized_label":"airplanes--rocket engines","broader":["http://id.loc.gov/authorities/subjects/sh85002832","http://id.loc.gov/authorities/subjects/sh85114703"],"aliases":["Airplanes--Rocket propulsion","Rocket planes--Motors","Rocket propulsion (Airplanes)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85002894","provider":"lcsh","revision":"6edee8a27d56e221","taxonomy_revision":"f050b5d4780b1289","title":"Airplanes--Rocket engines","url":"/topics/S85002894","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"326656108523569728","address_version":"morton4x16-v1","coordinates":[0,20,17450,14336],"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}