<http://schema.org/about>
"California farms represent 8% of the US's agriculture value, and the Central Valley is where most of that growing takes place. However, as the state struggles with ongoing droughts, the groundwater"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/california-farmers-face-frightening-water-debt-during-drought.html>