{"id":"S85104820","label":"Pontoon bridges","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85104820","normalized_label":"pontoon bridges","broader":["http://id.loc.gov/authorities/subjects/sh85016829"],"aliases":["Floating bridges","Ponton bridges"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85104820","provider":"lcsh","revision":"42624daa1eebdcc3","taxonomy_revision":"f050b5d4780b1289","title":"Pontoon bridges","url":"/topics/S85104820","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10090385608817115712","address_version":"morton4x16-v1","coordinates":[0,20,19042,53248],"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}