<http://schema.org/thumbnail>
"http://yospace-cds1.reuters.com/u/resize~ad1~120x120/0/f/~image_jpeg~9999-1/1/m/o/m/r/j/x2jn/reuters04?videoId=26235091"^^<http://www.w3.org/2001/XMLSchema#string>
<http://uk.reuters.com/video/2011/09/29/gunmen-open-fire-in-cameroon?videoId=222090970>