{"id":"S85042171","label":"Electromagnetic lenses","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85042171","normalized_label":"electromagnetic lenses","broader":["http://id.loc.gov/authorities/subjects/sh85042227","http://id.loc.gov/authorities/subjects/sh85075999","http://id.loc.gov/authorities/subjects/sh85079718"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85042171","provider":"lcsh","revision":"1f1ffa70feda1a1c","taxonomy_revision":"f050b5d4780b1289","title":"Electromagnetic lenses","url":"/topics/S85042171","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10124246169908561476","address_version":"morton4x16-v1","coordinates":[0,20,18063,60416],"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}