<http://schema.org/headline>
"VW Debuts the Eco Up! Natural Gas Car (29% Less CO2 per Mile than the Prius)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/slideshows/cars/vw-debuts-eco-natural-gas-car-29-less-co2-mile-prius/page/4/>