<https://wetpixel.com/forums/index.php?/topic/62309-sea-sea-ys-250-strobes/#comment-396564>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://wetpixel.com/forums/index.php?/topic/62309-sea-sea-ys-250-strobes/&tab=comments#comment-396631>