{"id":"S85100370","label":"Petroleum pipelines--Cathodic protection","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85100370","normalized_label":"petroleum pipelines--cathodic protection","broader":["http://id.loc.gov/authorities/subjects/sh85021038"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85100370","provider":"lcsh","revision":"ebdd1c59962b16b1","taxonomy_revision":"f050b5d4780b1289","title":"Petroleum pipelines--Cathodic protection","url":"/topics/S85100370","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"864902509565986308","address_version":"morton4x16-v1","coordinates":[0,20,18973,18432],"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}