<https://mmo4me.com/threads/app-web-dao-trx-k-can-von-co-roof-vua-nhan.436036/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mmo4me.com/threads/app-web-dao-trx-k-can-von-co-roof-vua-nhan.436036/#post-7511677>