<https://armande.net/2017/04/30/heidense-traditie-van-de-meiboom/meiboom-groen-maken-2/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://armande.net/2017/04/30/heidense-traditie-van-de-meiboom/meiboom-groen-maken-2/>