{"id":"S85054106","label":"Geology, Stratigraphic--Pennsylvanian","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85054106","normalized_label":"geology, stratigraphic--pennsylvanian","broader":["http://id.loc.gov/authorities/subjects/sh85054090"],"aliases":["Pennsylvanian Period","Upper Carboniferous Period"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85054106","provider":"lcsh","revision":"6024479b2af9cd76","taxonomy_revision":"f050b5d4780b1289","title":"Geology, Stratigraphic--Pennsylvanian","url":"/topics/S85054106","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"900865353133998656","address_version":"morton4x16-v1","coordinates":[0,20,18250,26624],"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}