<https://www.takahashi-eyeclinic.jp/blog/%e4%bb%a4%e5%92%8c%e6%9c%80%e5%88%9d%e3%81%ae%e6%9b%b4%e6%96%b0%e2%ad%90%ef%b8%8f/#authorImage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.takahashi-eyeclinic.jp/blog/%E4%BB%A4%E5%92%8C%E6%9C%80%E5%88%9D%E3%81%AE%E6%9B%B4%E6%96%B0%E2%AD%90%EF%B8%8F/>