<http://schema.org/about>
"The Backyard Box, a Passive House Certified \"accessory dwelling unit\" (aka mother-in-law apartment) is available in three sizes: Match, Sand, and Big."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/remodeling-design/blogs/thinking-and-living-inside-the-box>