{"id":"S85110981","label":"Railroad gauges","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85110981","normalized_label":"railroad gauges","broader":["http://id.loc.gov/authorities/subjects/sh85145963"],"aliases":["Gages (Railroads)","Gauges (Railroads)","Railroad track gauges","Railroad tracks--Gauges","Railroads--Gages","Railroads--Gauges","Track gauges, Railroad"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110981","provider":"lcsh","revision":"4980cc2cc41ca47f","taxonomy_revision":"f050b5d4780b1289","title":"Railroad gauges","url":"/topics/S85110981","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290561616821486148","address_version":"morton4x16-v1","coordinates":[0,20,19139,5120],"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}