<https://www.crowdguard.co.uk/#/schema/person/681bc329ea4b810f25a8bc5632c2050e>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.crowdguard.co.uk/2019/07/11/iwa-14-protecting-crowded-places/>