<https://mtg-arena.work/#listItem>
<http://schema.org/position>
"1"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://mtg-arena.work/%E3%80%90mtg%E3%82%A2%E3%83%AA%E3%83%BC%E3%83%8A%E3%80%91%E3%83%89%E3%82%A5%E3%83%BC%E3%83%A0%E3%82%BA%E3%83%87%E3%82%A4%E3%83%AA%E3%83%93%E3%83%B3%E3%82%B0%E3%82%A8%E3%83%B3%E3%83%89%E3%81%AE/>