<https://www.epipla1.gr/ntoylapia-koyzinas/syllogi-koyzinas-abb-econ/94952>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.epipla1.gr/ntoylapia-koyzinas/syllogi-koyzinas-abb-econ/set-koyzinas-abb23.html>