<https://blog.documentfoundation.org/blog/2019/05/09/libreoffice-63-bhsalpha1/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.documentfoundation.org/blog/2019/05/09/libreoffice-63-bhsalpha1/>