<http://schema.org/image>
<http://rack.2.mshcdn.com/media/ZgkyMDE0LzA2LzExLzhjL0hhc2hmbGFnLjc0MjU0LmpwZwpwCXRodW1iCTEyMDB4NjI3IwplCWpwZw/6abe1582/9bc/Hashflag.jpg>
<http://mashable.com/2014/06/10/world-cup-twitter-hashflags/>