<https://blogs.ethz.ch/crowdsourcing/en/#/schema/person/ce479e79e2281386ce1763204fa57681>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blogs.ethz.ch/crowdsourcing/en/2021/02/10/quaibruecke-b-1/>