<https://secure.gravatar.com/avatar/afb428e7fa743a3919f977c62f43c97a?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.techeblog.com/steeplejack-view-top-chrysler-building-new-york/>