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  "license": "All rights reserved（AI の参照・要約と出典リンクつきの引用は可。転載・再配布・販売は不可）",
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  "title": "直方体と立方体の体積",
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      "api_url": "https://manazoo.com/api/v1/entities/cuboid-volume.json"
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      "api_url": "https://manazoo.com/api/v1/entities/cube-volume.json"
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    {
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      "name": "大きな体積の単位",
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