<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Business_News/2013/07/18/Crude-oil-tops-108/14871374149217/>
<http://www.upi.com/Business_News/2013/07/18/Crude-oil-holds-above-106/UPI-14871374149217/?rel=58091374150443>