{"id":"S85128614","label":"Concrete street-railroad ties","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85128614","normalized_label":"concrete street-railroad ties","broader":["http://id.loc.gov/authorities/subjects/sh85111058"],"aliases":["Street-railroad ties, Concrete","Street-railroads--Ties, Concrete"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85128614","provider":"lcsh","revision":"479edaa69e3ea5c3","taxonomy_revision":"f050b5d4780b1289","title":"Concrete street-railroad ties","url":"/topics/S85128614","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9514065612251727424","address_version":"morton4x16-v1","coordinates":[0,20,19414,38912],"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}