<http://schema.org/about>
"Forget the atlas, the train schedule, the guidebook, and the local restaurant guide: All you need to travel green in 2011 is your smartphone -- and a few handy apps. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/7-must-have-phone-apps-for-green-travelers.html>