<http://schema.org/about>
"In the slideshow Frosty Receptions: Snow Palaces and Ice Hotels Around the World, I wrote that \"Ice is perhaps the greenest building material; it is made by nature and at the end of its useful life just melts away.\" Another"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/ice-hotel-in-sweden-is-homage-to-tron.html>