<https://physical-lab-ginza.com>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://physical-lab-ginza.com/blogs/%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9/%E3%81%8A%E7%9F%A5%E3%82%89%E3%81%9B-7%E6%9C%88%E3%81%AE%E3%82%AA%E3%83%B3%E3%83%A9%E3%82%A4%E3%83%B3%E4%BA%88%E7%B4%84%E9%96%8B%E5%A7%8B>