<https://tukasa.net/2020/10/20/#listItem>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://tukasa.net/2020/10/20/iphone7%E3%81%AE%E9%9B%BB%E6%B1%A0%E4%BA%A4%E6%8F%9B%E3%82%92%E3%81%97%E3%81%A6%E3%81%BF%E3%81%9F/>