<https://style.nikkei.com/article/DGXMZO48071300R00C19A8000000?channel=ASH00000&page=2>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://style.nikkei.com/article/DGXMZO48071300R00C19A8000000?channel=ASH00000&page=2>