<https://agileinstitute.pl/index.php/2019/01/26/wartosci-i-filary-scrum/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://agileinstitute.pl/index.php/2019/01/26/wartosci-i-filary-scrum/>