<https://sp.nicovideo.jp/watch/sm18796710>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://sp.nicovideo.jp/tag/%E3%83%AC%E3%83%99%E3%83%AB%EF%BC%91%E6%9C%80%E5%BC%B7%E8%AA%AC?cp_in=tag_watchTag>