<http://schema.org/mainEntityOfPage>
<http://www.upi.com/News_Photos/view/upi/30fc0fd9c75e8289647102d7cb1d5c79/Bomb-blasts-at-Boston-Marathon-in-Boston-MA/>
<http://www.upi.com/News_Photos/view/upi/30fc0fd9c75e8289647102d7cb1d5c79/>