<https://publica.gr/category/%ce%ba%ce%bf%ce%b9%ce%bd%cf%89%ce%bd%ce%af%ce%b1/%ce%ba%cf%8c%cf%83%ce%bc%ce%bf%cf%82/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://publica.gr/2019/06/03/3053/>