<http://schema.org/about>
"The sustainability demonstration showcase  house was erected in a single day, when it first appeared as part of Sydney's Art &amp; About Festival last month. Now it's on the move again, this time as an"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/culture/prefab-live-green-house-built-in-one-day.html>