{"id":"S85006475","label":"Arc-jet rocket engines","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85006475","normalized_label":"arc-jet rocket engines","broader":["http://id.loc.gov/authorities/subjects/sh85041995"],"aliases":["Arc-jet engines","Arc-jet thrusters","Electrothermal rocket engines"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85006475","provider":"lcsh","revision":"3b6f0b78be7a430f","taxonomy_revision":"f050b5d4780b1289","title":"Arc-jet rocket engines","url":"/topics/S85006475","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"324413104869999168","address_version":"morton4x16-v1","coordinates":[0,20,17506,11264],"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}