<http://schema.org/about>
"The company Sub-Zero has a few fridges with glass doors that allow you to see what's inside. The treehugger aspect of this design is that you can make your menu without letting out the cool air. I don't have any hard numbers, but it's obvious that if"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/kitchen-design/sub-zero-see-through-refrigerators.html>