{"id":"S85111452","label":"Rare earth lasers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85111452","normalized_label":"rare earth lasers","broader":["http://id.loc.gov/authorities/subjects/sh85074788"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85111452","provider":"lcsh","revision":"37a869427c250abe","taxonomy_revision":"f050b5d4780b1289","title":"Rare earth lasers","url":"/topics/S85111452","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"903042370050867776","address_version":"morton4x16-v1","coordinates":[0,20,19146,28672],"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}