<https://icef.com.co/component/k2/item/7477-concepto-292-ctcp-sobre-contratos-de-publicidad>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://icef.com.co/component/k2/item/7477-concepto-292-ctcp-sobre-contratos-de-publicidad>