{"entities":{"P31":{"pageid":246982,"ns":122,"title":"Property:P31","lastrevid":247599,"modified":"2025-09-21T21:21:05Z","type":"property","datatype":"external-id","id":"P31","labels":{"en":{"language":"en","value":"DOI"}},"descriptions":{"en":{"language":"en","value":"identifier"}},"aliases":{},"claims":{}}}}