<http://schema.org/headline>
"Philips' L Prize-winning light bulb goes on sale Sunday, priced between $20 and $60"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2012/04/17/philips-l-prize-winning-light-bulb-goes-on-sale-earth-day/>