<https://secure.gravatar.com/avatar/7d25c6fd0ba591e6e0f4969a7eaa48dc?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://zlotynauczyciel.pl/downloads/ucho-klasa-7-sketchnotka/>