<https://secure.gravatar.com/avatar/697c7f4ee06b6c547dd951aef547e439?s=96&amp;d=mm&amp;r=x>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.v3.russellheimlich.com/i-survived-the-2009-silver-spring-zombie-walk/>