{"id":"S2021005498","label":"Perovskite materials","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2021005498","normalized_label":"perovskite materials","broader":["http://id.loc.gov/authorities/subjects/sh85082065","http://id.loc.gov/authorities/subjects/sh85131669"],"aliases":["Perovskites (Materials)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2021005498","provider":"lcsh","revision":"44c80e7b6facfb85","taxonomy_revision":"f050b5d4780b1289","title":"Perovskite materials","url":"/topics/S2021005498","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14737114996129398850","address_version":"morton4x16-v1","coordinates":[0,481,55394,59392],"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}