{"id":"S2007001653","label":"B17 (Steam locomotives)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2007001653","normalized_label":"b17 (steam locomotives)","broader":["http://id.loc.gov/authorities/subjects/sh95009086"],"aliases":["B17 (Steam locomotive)","B17 4-6-0 (Steam locomotives)","B17 Class (Steam locomotives)","Footballer Class (Steam locomotives)","Gresley B17 Sandringham Class (Steam locomotives)","LNER Class B17 (Steam locomotives)","London and North Eastern Railway Class B17 (Steam locomotives)","Sandringham Class (Steam locomotives)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2007001653","provider":"lcsh","revision":"2b37abc2ba361eb2","taxonomy_revision":"f050b5d4780b1289","title":"B17 (Steam locomotives)","url":"/topics/S2007001653","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14413779430910616096","address_version":"morton4x16-v1","coordinates":[0,478,33192,54272],"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}