{"id":"S85041972","label":"Electric railroads--Third rail","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85041972","normalized_label":"electric railroads--third rail","broader":[],"aliases":["Third-rail railroads"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85041972","provider":"lcsh","revision":"0ef685250df3f3e7","taxonomy_revision":"f050b5d4780b1289","title":"Electric railroads--Third rail","url":"/topics/S85041972","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10090319639121905152","address_version":"morton4x16-v1","coordinates":[0,20,18060,53248],"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}