<https://haruao.com/2019/06/02/20190530-af%e6%96%b0%e5%ae%bf%e6%9c%ac%e5%ba%97/#breadcrumblist>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://haruao.com/2019/06/02/20190530-af%E6%96%B0%E5%AE%BF%E6%9C%AC%E5%BA%97/>