<https://photonik.gr/main/#website>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebSite>
<https://photonik.gr/main/extras-%CE%B2%CE%AC%CF%80%CF%84%CE%B9%CF%83%CE%B7%CF%82/dsc_0011/>