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    "type": {
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    "modified": "2025-08-06T11:29:17",
    "created": "1980-06-20",
    "prefLabel": {
        "literalForm": "四色問題",
        "transcription": "シショクモンダイ",
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            {
                "@value": "シショクモンダイ",
                "@language": "ja-Kana"
            },
            {
                "@value": "Shishokumondai",
                "@language": "ja-Latn"
            }
        ]
    },
    "label": "四色問題",
    "altLabel": [
        {
            "literalForm": "四色問題",
            "transcription": "ヨンショクモンダイ",
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                {
                    "@value": "ヨンショクモンダイ",
                    "@language": "ja-Kana"
                },
                {
                    "@value": "Yonshokumondai",
                    "@language": "ja-Latn"
                }
            ]
        },
        {
            "literalForm": "Four-color problem"
        }
    ],
    "source": [
        "四色問題 / 一松信 著",
        "岩波数学辞典 ; 平凡社大百科事典"
    ],
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