<http://schema.org/alternativeHeadline>
"The president addresses the American public from the Oval Office for the first time on the ongoing response to the oil spill and America's clean energy future."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/politics/videos/president-obamas-oval-office-address-on-bp-oil-spill>