<http://schema.org/thumbnailUrl>
<http://cbsnews2.cbsistatic.com/hub/i/r/2013/04/15/9fd7375a-3a29-11e3-a4cb-047d7b15b92e/thumbnail/1200x630/9c0c1795c7fe488a27e261248ec8a219/us_0415_twoexplosions.jpg>
<http://www.cbsnews.com/videos/second-explosion-at-boston-marathon-caught-on-tape/>