<https://johnriddell.com/2015/08/21/zimmerwald-1915-resolution-of-the-zimmerwald-left/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://johnriddell.com/2015/08/21/zimmerwald-1915-resolution-of-the-zimmerwald-left/>