<http://schema.org/about>
"We know that increasing density and going vertical can be a good way to go green, but how do you entice people off the ground floor? Modern Mechanix recently showed an interesting idea: The Revolator,  a different kind of elevator for vertical shopping"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/the-revolator-could-have-been-revolutionary.html>