<https://isrataku.com/%d7%97%d7%93%d7%a9%d7%95%d7%aa-%d7%90%d7%a0%d7%99%d7%9e%d7%94/aosbwg97/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://isrataku.com/forum/article.php?tag=098348-jean-mientus>