<http://schema.org/url>
<http://www.businessweek.com/articles/2013-12-16/beyonc-s-surprise-album-release-on-itunes-defies-pop-star-marketing>
<http://www.bloomberg.com/bw/articles/2013-12-16/beyonc-s-surprise-album-release-on-itunes-defies-pop-star-marketing>