{"id":"S97002699","label":"Fossil fuels--Nitrogen content","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh97002699","normalized_label":"fossil fuels--nitrogen content","broader":["http://id.loc.gov/authorities/subjects/sh85092062"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh97002699","provider":"lcsh","revision":"a549df02cf4e7be8","taxonomy_revision":"f050b5d4780b1289","title":"Fossil fuels--Nitrogen content","url":"/topics/S97002699","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"54192730183959142","address_version":"morton4x16-v1","coordinates":[0,23,8339,11264],"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}