<https://forums.rpgmakerweb.com/index.php?threads/tonbis-material-factory.103843/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forums.rpgmakerweb.com/index.php?threads/tonbis-material-factory.103843/page-4#post-943184>