<https://blogs.ethz.ch/crowdsourcing/en/#/schema/person/dce5f39137722472b1420d2672a42e19>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blogs.ethz.ch/crowdsourcing/2017/08/18/es-war-ein-opel-admiral/>