<https://forums.geocaching.com/GC/index.php?/topic/234617-statystyki/page/12/#comment-5409772>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forums.geocaching.com/GC/index.php?/topic/234617-statystyki/page/12/&tab=comments#comment-5410427>