{"id":"S85068199","label":"Iron ions","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85068199","normalized_label":"iron ions","broader":["http://id.loc.gov/authorities/subjects/sh85084061"],"aliases":["Ferric ions","Ferrous ions"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85068199","provider":"lcsh","revision":"d22283dcb17d7952","taxonomy_revision":"f050b5d4780b1289","title":"Iron ions","url":"/topics/S85068199","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9514074115150054976","address_version":"morton4x16-v1","coordinates":[0,20,18470,39936],"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}