<http://schema.org/mainEntityofPage>
<http://aolblog.aol.com/2013/07/22/nrg-energy-inc-and-nrg-yield-inc-announce-closing-/>
<http://www.aol.com/article/2013/07/22/nrg-energy-inc-and-nrg-yield-inc-announce-closing-/20673250/>