{"id":"S85092082","label":"Nitrogen oxides","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85092082","normalized_label":"nitrogen oxides","broader":["http://id.loc.gov/authorities/subjects/sh85096314"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85092082","provider":"lcsh","revision":"c76273fba5d49eb1","taxonomy_revision":"f050b5d4780b1289","title":"Nitrogen oxides","url":"/topics/S85092082","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10088274289796465220","address_version":"morton4x16-v1","coordinates":[0,20,18843,51200],"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}