<http://schema.org/about>
"Awhile back, we initiated a series of posts encouraging our readers from across the globe to tell us about their cities: the green good, bad and ugly of the city, including things like public transportation, suburban sprawl, air quality and other"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/culture/treehugger-picks-readers-take-on-sustainable-cities.html>