{"id":"S2004010621","label":"Zinc smelting","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2004010621","normalized_label":"zinc smelting","broader":["http://id.loc.gov/authorities/subjects/sh85123636"],"aliases":["Zinc ores--Smelting"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2004010621","provider":"lcsh","revision":"7239a4ce04f0f92c","taxonomy_revision":"f050b5d4780b1289","title":"Zinc smelting","url":"/topics/S2004010621","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14738109246625702406","address_version":"morton4x16-v1","coordinates":[0,477,51993,62464],"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}