{"id":"S2008122173","label":"Hydrogen as fuel--Congresses","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2008122173","normalized_label":"hydrogen as fuel--congresses","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2008122173","provider":"lcsh","revision":"247e3c8f3c7720e2","taxonomy_revision":"f050b5d4780b1289","title":"Hydrogen as fuel--Congresses","url":"/topics/S2008122173","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14738043258747905568","address_version":"morton4x16-v1","coordinates":[0,478,50700,62464],"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}