<http://schema.org/about>
"TreeHugger Radio (you can listen to past episodes here) is currently looking for a sponsor. If you are interested or want more information, please contact advertising [at] treehugger [dot] com or call 212.941.4603. For more information on advertising"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/treehugger-radio/treehugger-radio-looking-for-a-sponsor.html>