{"id":"S2008004992","label":"Petroleum as fuel--Additives--Environmental aspects","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2008004992","normalized_label":"petroleum as fuel--additives--environmental aspects","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2008004992","provider":"lcsh","revision":"b58af7fc233fba14","taxonomy_revision":"f050b5d4780b1289","title":"Petroleum as fuel--Additives--Environmental aspects","url":"/topics/S2008004992","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4630901368817854048","address_version":"morton4x16-v1","coordinates":[0,478,48870,0],"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}