<http://schema.org/about>
"the shrinking of the oxygen-depleted dead zone in the Gulf of Mexico will be stifled if the U.S. continues to increase its biofuel production."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/gulf-of-mexico-dead-zone-to-grow-dramatically-due-to>