<https://freecode.com.vn/dai-chien-may-cat-che-tao-may-cat-tu-nap-bia-make-cutting-machines-anh-ba-phai-tv>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://freecode.com.vn/dai-chien-may-cat-che-tao-may-cat-tu-nap-bia-make-cutting-machines-anh-ba-phai-tv>