<https://elpais.com/cnic-centro-nacional-investigaciones-cardiovasculares-a/cnic-centro-nacional-investigaciones-cardiovasculares/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://elpais.com/elpais/2018/07/16/eps/1531763162_319492.html>