<https://dino-reha.com/tag/%e5%80%8b%e5%88%a5%e3%83%aa%e3%83%8f%e3%83%93%e3%83%aa/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://dino-reha.com/tag/%E5%80%8B%E5%88%A5%E3%83%AA%E3%83%8F%E3%83%93%E3%83%AA/>