{"id":"S2020001106","label":"End-Permian Extinction","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2020001106","normalized_label":"end-permian extinction","broader":["http://id.loc.gov/authorities/subjects/sh2009010754"],"aliases":["End-Permian Mass Extinction","Great Dying (End-Permian Extinction)","P-T Extinction","P-Tr Extinction","P-Tr Mass Extinction","Permian Extinction (End-Permian Extinction)","Permian Mass Extinction (End-Permian Extinction)","Permian-Triassic Extinction","Permian-Triassic Mass Extinction","Permo-Triassic Extinction","Permo-Triassic Mass Extinction"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2020001106","provider":"lcsh","revision":"4d9093ccc5cf5068","taxonomy_revision":"f050b5d4780b1289","title":"End-Permian Extinction","url":"/topics/S2020001106","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"5189484078090683398","address_version":"morton4x16-v1","coordinates":[0,481,39701,18432],"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}