<http://schema.org/about>
"Walmart leads the way in generating solar energy from its store rooftops, creating 65,000 kilowatts from the sun. Big-box retailers are often cast as the boogie"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/money/sustainable-business-practices/stories/everything-under-the-sun-including-electricity>