{"id":"S2017004456","label":"Environmental conditions--20th century","description":"Use as a topical subdivision under names of countries, cities, etc.","source_url":"https://id.loc.gov/authorities/subjects/sh2017004456","normalized_label":"environmental conditions--20th century","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2017004456","provider":"lcsh","revision":"99f24d36a8998099","taxonomy_revision":"f050b5d4780b1289","title":"Environmental conditions--20th century","url":"/topics/S2017004456","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14177336034175501376","address_version":"morton4x16-v1","coordinates":[0,480,58414,40960],"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}