<https://p2y.jp/vtuber-youtube-subscribers-information-productions-and-groups-7-march-2021/#webpage>
<http://schema.org/dateModified>
"2021-03-06T15:23:37+09:00"^^<http://schema.org/Date>
<https://p2y.jp/vtuber-youtube-subscribers-information-productions-and-groups-7-march-2021/>