{"id":"S85068190","label":"Iron founding","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85068190","normalized_label":"iron founding","broader":["http://id.loc.gov/authorities/subjects/sh85051050"],"aliases":["Casting of iron","Iron casting"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85068190","provider":"lcsh","revision":"e27e35a8b0cfd557","taxonomy_revision":"f050b5d4780b1289","title":"Iron founding","url":"/topics/S85068190","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"903182831524644416","address_version":"morton4x16-v1","coordinates":[0,20,18470,30720],"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}