<https://eco.sapo.pt/2019/11/08/os-ingredientes-que-fizeram-este-web-summit/eco.sapo.pt>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://eco.sapo.pt/2019/11/08/os-ingredientes-que-fizeram-este-web-summit/>