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Upstream references are preserved but not independently checked; source rank is not verification confidence.","reviewMethod":"rule-validated","ruleSet":"brandsource-wikidata-v1","sources":[{"url":"https://www.wikidata.org/w/index.php?title=Q48833074&oldid=2432916205","title":"Wikidata Q48833074, revision 2432916205","kind":"knowledge-base","lineage":"wikidata.org","observedAt":"2026-10-17T05:09:50.281Z","recordId":"Q48833074:P1454@2432916205"},{"url":"https://www.wikidata.org/w/index.php?title=Q1185713&oldid=2492031005","title":"Wikidata label: Q1185713, revision 2492031005","kind":"knowledge-base","lineage":"wikidata.org","observedAt":"2026-10-17T03:07:45.268Z","recordId":"Q1185713:label:en@2492031005"}]},{"claimId":"brandsource:nakaya-fountain-pen-co-ltd:wikidata:p856","version":1,"entityId":"wd_Q48833074","entitySlug":"nakaya-fountain-pen-co-ltd","entityName":"NAKAYA FOUNTAIN PEN Co., Ltd.","entityKind":"brand","profilePath":"/brands/nakaya-fountain-pen-co-ltd","field":"wikidata.p856","label":"Official website (Wikidata; date unspecified)","value":"http://www.nakaya.org/","scope":"Wikidata Q48833074 property P856. 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