<https://hifigo.com/blogs/review/oriolust-dps-l2-unboxing-a-retro-design-with-modern-tech>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://hifigo.com/blogs/review/oriolust-dps-l2-unboxing-a-retro-design-with-modern-tech>