<https://secure.gravatar.com/avatar/d627d019ec58b1f2d33702ff7247b2f5?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://toolblaze.com/how-to-handle-plumbing-in-a-basement-refinishing/>