{"id":"S91004472","label":"Positron beams","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh91004472","normalized_label":"positron beams","broader":["http://id.loc.gov/authorities/subjects/sh85098361"],"aliases":["Beams, Positron"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh91004472","provider":"lcsh","revision":"7cf74dab618cd35b","taxonomy_revision":"f050b5d4780b1289","title":"Positron beams","url":"/topics/S91004472","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14466688177970496002","address_version":"morton4x16-v1","coordinates":[0,21,45688,57344],"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}