<https://secure.gravatar.com/avatar/95bacc946ddae6d3c008c150e8a03faa?s=96&amp;d=wavatar&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://hedgefundalpha.com/david-einhorn-2017-letter/>