<https://forums.sassnet.com/index.php?/topic/322814-cleaning-out-leading-with-a-copper-jacketed-round/#comment-4173150>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Comment>
<https://forums.sassnet.com/index.php?/topic/322814-cleaning-out-leading-with-a-copper-jacketed-round/&tab=comments#comment-4173880>