<http://schema.org/description>
"Demand for gasoline rose 0.3 percent January through April of 2012 compared to the same period a year earlier, the American Petroleum Institute said."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Business_News/2012/05/18/Petroleum-demand-slides-with-production-up/UPI-18941337362155/>