{"id":"S85041780","label":"Electric lighting, Mercury vapor","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85041780","normalized_label":"electric lighting, mercury vapor","broader":["http://id.loc.gov/authorities/subjects/sh85041653"],"aliases":["Mercury electric light"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85041780","provider":"lcsh","revision":"10f2d421d84c144d","taxonomy_revision":"f050b5d4780b1289","title":"Electric lighting, Mercury vapor","url":"/topics/S85041780","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10090319639121904132","address_version":"morton4x16-v1","coordinates":[0,20,18057,53248],"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}