<https://ripple2.tokyo/kl%e3%83%80%e3%82%a4%e3%83%90%e3%83%bc%e3%82%b8%e3%82%a7%e3%83%b3%e3%82%b9/#webpage>
<http://schema.org/datePublished>
"2021-05-04T01:42:39+00:00"^^<http://schema.org/Date>
<https://ripple2.tokyo/kl%E3%83%80%E3%82%A4%E3%83%90%E3%83%BC%E3%82%B8%E3%82%A7%E3%83%B3%E3%82%B9/>