<https://trainingstel.com/audiobooki/gra-slow-zmian-slowa-a-zmienisz-zycie-5/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://trainingstel.com/audiobooki/gra-slow-zmian-slowa-a-zmienisz-zycie-5/>