{"id":"S2022005377","label":"Petroporphyrins","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2022005377","normalized_label":"petroporphyrins","broader":["http://id.loc.gov/authorities/subjects/sh85105022"],"aliases":["Fossil porphyrins","Petroleum porphyrins","Petroleum-based porphyrins"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2022005377","provider":"lcsh","revision":"a5937c6b59978542","taxonomy_revision":"f050b5d4780b1289","title":"Petroporphyrins","url":"/topics/S2022005377","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"1139120460021856","address_version":"morton4x16-v1","coordinates":[0,482,5482,1024],"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}