{"id":"S86000672","label":"X-ray lasers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh86000672","normalized_label":"x-ray lasers","broader":["http://id.loc.gov/authorities/subjects/sh85093066"],"aliases":["Lasers, X-ray"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh86000672","provider":"lcsh","revision":"6633aeb5b7a8643b","taxonomy_revision":"f050b5d4780b1289","title":"X-ray lasers","url":"/topics/S86000672","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"13835058072462426624","address_version":"morton4x16-v1","coordinates":[0,20,33040,32768],"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}