<http://schema.org/about>
"We have previously noted examples of Achieving Density in Prefabricated Housing;  now Belgian artist Maxime Delporte gives us not a bird house, but a bird apartment complex with La Mangeoire project."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/density-is-for-the-birds.html>