<http://schema.org/url>
<http://www.mercurynews.com/2013/04/07/timeline-the-battle-to-open-u-s-skies-to-unarmed-drones-is-heating-up/>
<http://www.mercurynews.com/2013/04/07/timeline-the-battle-to-open-u-s-skies-to-unarmed-drones-is-heating-up/>