<http://schema.org/about>
"We've already seen one company in the UK selling biogas direct to the consumer, and extolling its vegan virtues too. Now households in Oxfordshire, UK, will be cooking and heating their"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/renewable-energy/cooking-on-poop-gas-takes-off.html>