<http://schema.org/about>
"You've likely heard about the infamous Tar Sands in Alberta, Canada. They're a major source of controversy in the energy world and the environmental community (to put it lightly), and for good reason."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/first-us-tar-sands-project-approved-in-utah.html>