{"id":"S90005220","label":"Water--Purification--Lead removal","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh90005220","normalized_label":"water--purification--lead removal","broader":["http://id.loc.gov/authorities/subjects/sh93001409"],"aliases":["Lead removal (Water purification)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh90005220","provider":"lcsh","revision":"06e3b07c3b6e7ea7","taxonomy_revision":"f050b5d4780b1289","title":"Water--Purification--Lead removal","url":"/topics/S90005220","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9532998926534591046","address_version":"morton4x16-v1","coordinates":[0,21,30075,36864],"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}