<https://secure.gravatar.com/avatar/666aac37200825317f59e6f69bba85f5?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://cleanyourupholstery.com/can-you-deep-clean-a-leather-couch/>