<http://schema.org/about>
"Germany's DW-TV takes a visit to Freiburg's solar village, where residents live in colorful houses that produce way more energy than their occupants require.  As a result, homeowners have become \"eco-entrepreneurs\", selling the electricity their homes"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/ecocities-of-tomorrow-a-visit-to-freiburg.html>