{"id":"S2001000599","label":"Calcium fluoride","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2001000599","normalized_label":"calcium fluoride","broader":["http://id.loc.gov/authorities/subjects/sh2001000783","http://id.loc.gov/authorities/subjects/sh85049419"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2001000599","provider":"lcsh","revision":"2fe35d8a2bee8305","taxonomy_revision":"f050b5d4780b1289","title":"Calcium fluoride","url":"/topics/S2001000599","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"579988286894907970","address_version":"morton4x16-v1","coordinates":[0,477,4962,23552],"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}