{"id":"S85110904","label":"Railroads","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85110904","normalized_label":"railroads","broader":["http://id.loc.gov/authorities/subjects/sh85029044","http://id.loc.gov/authorities/subjects/sh85030624","http://id.loc.gov/authorities/subjects/sh85108825","http://id.loc.gov/authorities/subjects/sh85137027","http://id.loc.gov/authorities/subjects/sh85138268"],"aliases":["Iron horses (Railroads)","Lines, Railroad","Rail industry","Rail lines","Rail transportation","Railroad industry","Railroad lines","Railroad transportation","Railway industry","Railways"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110904","provider":"lcsh","revision":"c1a16c49fb02960e","taxonomy_revision":"f050b5d4780b1289","title":"Railroads","url":"/topics/S85110904","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10124162607091941892","address_version":"morton4x16-v1","coordinates":[0,20,19137,57344],"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}