<https://madonielive.com/2015/04/02/operai-miniera-italkali-incontrano-il-sindaco-di-soprana/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://madonielive.com/2015/04/02/operai-miniera-italkali-incontrano-il-sindaco-di-soprana/>