{"id":"S87001193","label":"Frontier Formation","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh87001193","normalized_label":"frontier formation","broader":["http://id.loc.gov/authorities/subjects/sh85054092","http://id.loc.gov/authorities/subjects/sh86003924"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh87001193","provider":"lcsh","revision":"622a47e79d01f126","taxonomy_revision":"f050b5d4780b1289","title":"Frontier Formation","url":"/topics/S87001193","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"13890310988483396100","address_version":"morton4x16-v1","coordinates":[0,20,48673,41984],"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}