<http://schema.org/about>
"End-of-pipe pollution control add-ons are what most coal-fired plant owners in the USA are  planning for these days."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/martin-drake-power-plant-in-colorado-tests-new-coal-plant-emissions-scrubber.html>