{"id":"S85110922","label":"Railroad cars--Heating and ventilation","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85110922","normalized_label":"railroad cars--heating and ventilation","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110922","provider":"lcsh","revision":"a4632a3f72e102af","taxonomy_revision":"f050b5d4780b1289","title":"Railroad cars--Heating and ventilation","url":"/topics/S85110922","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"324470555422097984","address_version":"morton4x16-v1","coordinates":[0,20,19138,10240],"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}