<https://images.ctfassets.net/9pvazpst9iwl/5TJ6mKOClRBIHjU2yK3BBj/4ee81542f17c28fa68e655cb3cc9a13a/relaxed-woman-works-outside-on-phone-and-laptop.jpg>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.docusign.com/ja-jp/blog/workflow-visualizing-business>