<https://ekani-jinsei.com/immersive-feeling-that-is-important-for-both-english-conversation-and-metaverse/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://ekani-jinsei.com/immersive-feeling-that-is-important-for-both-english-conversation-and-metaverse/>