{"id":"S2025000581-781","label":"Rust Belt States","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2025000581-781","normalized_label":"rust belt states","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2025000581-781","provider":"lcsh","revision":"f06d1dbace9ecd62","taxonomy_revision":"f050b5d4780b1289","title":"Rust Belt States","url":"/topics/S2025000581-781","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4902252350559013088","address_version":"morton4x16-v1","coordinates":[0,482,52282,5902],"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}