{"id":"S89002772","label":"Boron compounds","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh89002772","normalized_label":"boron compounds","broader":["http://id.loc.gov/authorities/subjects/sh85022963"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh89002772","provider":"lcsh","revision":"8bcaffa598682d34","taxonomy_revision":"f050b5d4780b1289","title":"Boron compounds","url":"/topics/S89002772","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"597923219344868866","address_version":"morton4x16-v1","coordinates":[0,21,14412,20480],"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}