{"id":"S2009001871","label":"Eighteen fifties","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2009001871","normalized_label":"eighteen fifties","broader":["http://id.loc.gov/authorities/subjects/sh85091984"],"aliases":["1850s","50s (Nineteenth century decade)","Fifties (Nineteenth century decade)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2009001871","provider":"lcsh","revision":"8ece04ce643fa7b6","taxonomy_revision":"f050b5d4780b1289","title":"Eighteen fifties","url":"/topics/S2009001871","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4957557494450120288","address_version":"morton4x16-v1","coordinates":[0,478,64446,15360],"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}