{"id":"S2012000716","label":"B12 (Steam locomotives)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2012000716","normalized_label":"b12 (steam locomotives)","broader":["http://id.loc.gov/authorities/subjects/sh95009086"],"aliases":["1500 Class (Steam locomotives)","B12 Class (Steam locomotives)","Class B12 (Steam locomotives)","GER Class S69 (Steam locomotives)","Great Eastern Railway Class S69 (Steam locomotives)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2012000716","provider":"lcsh","revision":"b7f9fd89ae48161b","taxonomy_revision":"f050b5d4780b1289","title":"B12 (Steam locomotives)","url":"/topics/S2012000716","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4669107198855620198","address_version":"morton4x16-v1","coordinates":[0,479,45767,12288],"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}