{"id":"S85148740","label":"X-ray optics","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85148740","normalized_label":"x-ray optics","broader":["http://id.loc.gov/authorities/subjects/sh85095187"],"aliases":["Roentgen optics"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85148740","provider":"lcsh","revision":"d8245e65076a867d","taxonomy_revision":"f050b5d4780b1289","title":"X-ray optics","url":"/topics/S85148740","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290556959936348676","address_version":"morton4x16-v1","coordinates":[0,20,19729,4096],"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}