<https://www.forum24.cz/v-sestnacti-kopal-tunel-z-gulagu-ceskoslovenska-stb-mu-nedala-pokoj-az-do-prevratu/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.forum24.cz/v-sestnacti-kopal-tunel-z-gulagu-ceskoslovenska-stb-mu-nedala-pokoj-az-do-prevratu/>