<http://schema.org/image>
<http://rack.2.mshcdn.com/media/ZgkyMDEyLzEyLzA0L2NlL3lvdXR1YmVjb3ZlLmJzNV83aWxtLnBuZwpwCXRodW1iCTEyMDB4NjI3IwplCWpwZw/a0090843/51a/youtube-cover-song-face-off-katy-perry-s-firework--1caac73392.jpg>
<http://mashable.com/2011/08/28/youtube-cover-katy-perry/>