<https://kitsprimair.nl/pietervanthuyl/wp-content/uploads/sites/2/2021/04/peuterpret-week-15-16-2021.pdf>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://ikcpietervanthuyl.nl/peuter/peuterpret-week-15-16-2021/>