<http://schema.org/about>
"We know a few things about honoring the people, organizations, and companies that are at the top of their game when it comes to spreading the green message (see our Best of Green package for details). But we always like to see"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/heart-of-green-awards-honor-famous-and-not-so-famous-environmentalists.html>