{"id":"S87006520","label":"Tetraethyllead","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh87006520","normalized_label":"tetraethyllead","broader":["http://id.loc.gov/authorities/subjects/sh85095556"],"aliases":["Lead tetraethyl","TEL (Chemical)","Tetraethyl lead","Tetraethyl plumbane"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh87006520","provider":"lcsh","revision":"ed437cd9abca13bc","taxonomy_revision":"f050b5d4780b1289","title":"Tetraethyllead","url":"/topics/S87006520","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14466762944761169408","address_version":"morton4x16-v1","coordinates":[0,20,48756,57344],"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}