<https://www.canonrumors.com/forum/members/canon-rumors-guy.1/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.canonrumors.com/forum/threads/canon-rf-10-20mm-f4l-is-stm-preview-review-summary.42880/page-2>