<http://schema.org/about>
"The other day we highlighted a new book on housing built from hemp. And we suggested that hempcrete, or Isochanvre, wasn't the only way to construct buildings with the wonder crop. That's because some folk have been whacking up structures made of"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/hemp-baled-houses.html>