<https://chartmogul.com/blog/increasing-net-dollar-retention-to-build-a-compelling-enterprise-saas-play/#article>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://chartmogul.com/blog/increasing-net-dollar-retention-to-build-a-compelling-enterprise-saas-play/>