{"id":"S85110864","label":"Railroad bridges","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85110864","normalized_label":"railroad bridges","broader":["http://id.loc.gov/authorities/subjects/sh85016829"],"aliases":["Railroads--Bridges"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110864","provider":"lcsh","revision":"1d2877a2b6654892","taxonomy_revision":"f050b5d4780b1289","title":"Railroad bridges","url":"/topics/S85110864","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"864761773218202116","address_version":"morton4x16-v1","coordinates":[0,20,19137,16384],"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}