<http://schema.org/about>
"Five years after the release of 'An Inconvenient Truth,' Gore returns to the world stage with 24 one-hour presentations around the world. But is this the right"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/climate-weather/stories/will-this-al-gore-slide-show-be-more-successful-than-the-last>