<https://madevisible.swiss/blog/diy/einfache-und-coole-do-it-yourself-projekte-fuer-velos-und-alles-was-raeder-hat/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://madevisible.swiss/blog/einfache-und-coole-do-it-yourself-projekte-fuer-velos-und-alles-was-raeder-hat/>