{"id":"S2020012294","label":"Road roller operators","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2020012294","normalized_label":"road roller operators","broader":["http://id.loc.gov/authorities/subjects/sh85114472"],"aliases":["Operators, Paving roller","Operators, Road roller","Operators, Roller (Road roller operators)","Paving roller operators","Roller operators (Road roller operators)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2020012294","provider":"lcsh","revision":"92dff7e630ab425e","taxonomy_revision":"f050b5d4780b1289","title":"Road roller operators","url":"/topics/S2020012294","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4615275126741533698","address_version":"morton4x16-v1","coordinates":[0,481,39876,6144],"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}