<https://secure.gravatar.com/avatar/d2f72301a9fb94524715a06d0afc0af6?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://orangecountyrvrepair.com/lubricating-your-rvs-locks-and-hinges/>