{"id":"S2002000019","label":"Evorsion","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2002000019","normalized_label":"evorsion","broader":["http://id.loc.gov/authorities/subjects/sh85044667"],"aliases":["Pothole erosion in river channels","Pothole formation in river channels","River channels--Evorsion","River channels--Pothole erosion","River channels--Pothole formation"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2002000019","provider":"lcsh","revision":"b58eba7f3940ae80","taxonomy_revision":"f050b5d4780b1289","title":"Evorsion","url":"/topics/S2002000019","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"865966571175158338","address_version":"morton4x16-v1","coordinates":[0,477,20578,19456],"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}