<http://schema.org/url>
<http://www.businessweek.com/articles/2014-04-22/will-a-web-only-mattress-startup-keep-serta-and-sealy-up-at-night>
<http://www.bloomberg.com/bw/articles/2014-04-22/will-a-web-only-mattress-startup-keep-serta-and-sealy-up-at-night>