<http://schema.org/about>
"We're looking at 2 to 6 months before the oil will stop gushing into the Gulf of Mexico. There are still a lot of questions that need answers."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/energy/blogs/more-questions-about-the-oil-spill>