<http://schema.org/about>
"Net-zero energy builder ZETA Communities unveils a super green nursery, the Seed &amp; Plant Lab, for the Presidio Stewardship Center."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/remodeling-design/blogs/san-franciscos-truly-green-greenhouse>