<http://schema.org/about>
"A few weeks ago we caught a behind-the-scenes glimpse at an industrial composting operation. But it's not just regular composting that's going mainstream. Vermicomposting, or worm"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/lawn-garden/worm-composting-becomes-big-business.html>