<https://www.pedelecs.co.uk/forum/threads/adding-throttle-to-e-plus-bike.41901/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.pedelecs.co.uk/forum/threads/adding-throttle-to-e-plus-bike.41901/#post-625840>