{"id":"S2009001597","label":"Nitrous oxide injection systems (Fuel systems)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2009001597","normalized_label":"nitrous oxide injection systems (fuel systems)","broader":["http://id.loc.gov/authorities/subjects/sh85067322"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2009001597","provider":"lcsh","revision":"14156f33c062270f","taxonomy_revision":"f050b5d4780b1289","title":"Nitrous oxide injection systems (Fuel systems)","url":"/topics/S2009001597","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14757249546119963172","address_version":"morton4x16-v1","coordinates":[0,478,64441,62464],"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}