<http://schema.org/about>
"\nAccording to China's latest pollution rankings, the country's most polluted city is now Urumqi. Linfen, the city that formally held this title, is showing some small progress, says a recent article in The Guardian. Swallowed up by 50m tonnes of coal"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/linfen-china-chinaatms-most-polluted-city-moves-up-a-notch.html>