<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Top_News/2008/01/08/Doctors-ask-Polish-president-for-pay-hike/89531199831451/>
<http://www.upi.com/Top_News/2008/01/08/Doctors-ask-Polish-president-for-pay-hike/UPI-89531199831451/>