{"id":"S85085524","label":"Mine railroad tracks","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85085524","normalized_label":"mine railroad tracks","broader":["http://id.loc.gov/authorities/subjects/sh85111063"],"aliases":["Mine railroads--Track"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85085524","provider":"lcsh","revision":"4f12b5bccd322639","taxonomy_revision":"f050b5d4780b1289","title":"Mine railroad tracks","url":"/topics/S85085524","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"867013314197456388","address_version":"morton4x16-v1","coordinates":[0,20,18741,20480],"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}