{"id":"S2010015229","label":"Class A1 (Steam locomotives)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2010015229","normalized_label":"class a1 (steam locomotives)","broader":["http://id.loc.gov/authorities/subjects/sh95009086"],"aliases":["A1 Class (Steam locomotives)","LNER Class A1 (Steam locomotives)","LNER Peppercorn Class (Steam locomotives)","Peppercorn Class (Steam locomotives)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2010015229","provider":"lcsh","revision":"e37e65ae3bbc94e4","taxonomy_revision":"f050b5d4780b1289","title":"Class A1 (Steam locomotives)","url":"/topics/S2010015229","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9857332876658746982","address_version":"morton4x16-v1","coordinates":[0,479,14743,62464],"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}