{"id":"S85078012","label":"Steam locomotives--Fireboxes","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85078012","normalized_label":"steam locomotives--fireboxes","broader":[],"aliases":["Fireboxes in steam locomotives","Locomotives--Fire-boxes"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85078012","provider":"lcsh","revision":"618d228e11388074","taxonomy_revision":"f050b5d4780b1289","title":"Steam locomotives--Fireboxes","url":"/topics/S85078012","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10126414131965085252","address_version":"morton4x16-v1","coordinates":[0,20,18623,61440],"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}