{"id":"S90003681","label":"Pion double charge exchange","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh90003681","normalized_label":"pion double charge exchange","broader":["http://id.loc.gov/authorities/subjects/sh88005990"],"aliases":["Double charge exchange, Pion"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh90003681","provider":"lcsh","revision":"e28df7da6ffff7d7","taxonomy_revision":"f050b5d4780b1289","title":"Pion double charge exchange","url":"/topics/S90003681","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9530755922813649478","address_version":"morton4x16-v1","coordinates":[0,21,30051,33792],"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}