<http://schema.org/alternativeHeadline>
"The gloves are off in a heated battle between Sarah Palin and Al Gore, after Palin said climate change warnings are nothing more than doomsday scare tactics."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/climate-weather/stories/gore-vs-palin-on-climate-change>