{"id":"S85012637","label":"Beam optics","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85012637","normalized_label":"beam optics","broader":["http://id.loc.gov/authorities/subjects/sh85042179","http://id.loc.gov/authorities/subjects/sh85095181"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85012637","provider":"lcsh","revision":"70f81eb4d6155e80","taxonomy_revision":"f050b5d4780b1289","title":"Beam optics","url":"/topics/S85012637","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"902984920568300096","address_version":"morton4x16-v1","coordinates":[0,20,17602,29696],"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}