<https://blog.marmalead.com/help-choosing-between-similar-etsy-keywords/compare-apples-and-oranges/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.marmalead.com/help-choosing-between-similar-etsy-keywords/compare-apples-and-oranges/>