<http://schema.org/headline>
"Pan-STARRS comet will be visible in western sky tonight"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.tuscaloosanews.com/article/20130315/NEWS/130319845/1291/APE?Title=Pan-STARRS-comet-will-be-visible-in-western-sky-tonight>