<http://schema.org/about>
"Over the last 10 years, there have been 34 coal ash spills--some were famous catastrophes, like the one in Tennessee, while others have flown relatively under the radar. And a brand new federal"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/600-coal-ash-dump-sites-found-in-35-states-is-there-one-near-you.html>