<https://www.bunguyasan.net/tag/%e3%83%9e%e3%82%a4%e3%83%87%e3%82%b3%e3%82%b9%e3%82%bf%e3%82%a4%e3%83%ab#breadcrumblist>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
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