<https://es.weilongmetal.com/blog/pcs-will-decline-in-23-by-the-most-in-40-years-idc-says>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://es.weilongmetal.com/blog/pcs-will-decline-in-23-by-the-most-in-40-years-idc-says>