{"id":"S85138142","label":"Truck tractors--Fifth wheels","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85138142","normalized_label":"truck tractors--fifth wheels","broader":["http://id.loc.gov/authorities/subjects/sh85033498"],"aliases":["Fifth wheels (Couplings)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85138142","provider":"lcsh","revision":"b362c9e54f5158c0","taxonomy_revision":"f050b5d4780b1289","title":"Truck tractors--Fifth wheels","url":"/topics/S85138142","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"903187229638279748","address_version":"morton4x16-v1","coordinates":[0,20,19563,30720],"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}