<http://schema.org/thumbnail>
"http://yospace-cds1.reuters.com/u/resize~ad1~120x120/0/f/~image_jpeg~9999-1/1/m/m/q/4/g/zw7g/reuters04?videoId=39177247"^^<http://www.w3.org/2001/XMLSchema#string>
<http://uk.reuters.com/video/2012/05/21/ecologists-take-to-the-skies-in-fight-ag?videoId=235333100>