<https://www.de-lage-landen.com/article/nbd-biblion-vaart-de-juiste-machinekoers/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://www.de-lage-landen.com/article/nbd-biblion-vaart-de-juiste-machinekoers/>