<https://forum.kopalniawiedzy.pl/topic/957-silnik-na-antymateri%C4%99/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.kopalniawiedzy.pl/topic/957-silnik-na-antymateri%C4%99/?tab=comments#comment-975>