<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Science_News/Technology/2013/02/24/De-nova-firms-a-new-business-sector/66381361745832/>
<http://www.upi.com/Science_News/Technology/2013/02/24/De-nova-firms-a-new-business-sector/UPI-66381361745832/>