<http://schema.org/url>
<http://www.businessweek.com/articles/2012-10-21/when-it-comes-to-government-subsidies-dirty-energy-still-cleans-up>
<http://www.bloomberg.com/bw/articles/2012-10-21/when-it-comes-to-government-subsidies-dirty-energy-still-cleans-up>