<https://secure.gravatar.com/avatar/f140027371ddbfc90a9f334f40699aac?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.woodworkcenter.com/want-to-learn-woodworking-tips-read-on-3/>