_:n21333f7a9a22488db094e6d96b210830xb0
<http://schema.org/mainEntity>
"http://www.wikidata.org/entity/Q259997"
<https://el.wikipedia.org/wiki/%CE%A5%CE%B4%CF%81%CE%BF%CE%BE%CF%85%CE%BB%CE%B1%CE%BC%CE%AF%CE%BD%CE%B7>